math help

What is 87/100 + 7/11?

What is 87/100 + 7/11?

This is how you add

87
100
+
7
11

Step 1

We still have different denominators (bottom numbers), though, so we need to get a common denominator. This will make the bottom numbers match. Multiply the denominators together first. Now, multiply each numerator by the other term's denominator.

Now we multiply 87 by 11, and get 957, then we multiply 100 by 11 and get 1100.

87/100 times 11

Now for the second term. You multiply 7 by 100, and get 700, then multiply 100 by 11 and get 1100.

7/11 times 100

This gives us a new problem that looks like so:

957
1100
+
700
1100

Step 2

Since our denominators match, we can add the numerators.

957 + 700 = 1657

So what's the answer so far?

1657
1100

Step 3

Can this fraction be reduced?

First, we attempt to divide it by 2...

Nope. Try the next prime number, 3...

Nope. Try the next prime number, 5...

Nope. Try the next prime number, 7...

Nope. Try the next prime number, 11...

Nope. Try the next prime number, 13...

Nope. Try the next prime number, 17...

Nope. Try the next prime number, 19...

Nope. Try the next prime number, 23...

Nope. Try the next prime number, 29...

Nope. Try the next prime number, 31...

Nope. Try the next prime number, 37...

Nope. Try the next prime number, 41...

Nope. Try the next prime number, 43...

Nope. Try the next prime number, 47...

Nope. Try the next prime number, 53...

Nope. Try the next prime number, 59...

Nope. Try the next prime number, 61...

Nope. Try the next prime number, 67...

Nope. Try the next prime number, 71...

Nope. Try the next prime number, 73...

Nope. Try the next prime number, 79...

Nope. Try the next prime number, 83...

Nope. Try the next prime number, 89...

Nope. Try the next prime number, 97...

Nope. Try the next prime number, 101...

Nope. Try the next prime number, 103...

Nope. Try the next prime number, 107...

Nope. Try the next prime number, 109...

Nope. Try the next prime number, 113...

Nope. Try the next prime number, 127...

Nope. Try the next prime number, 131...

Nope. Try the next prime number, 137...

Nope. Try the next prime number, 139...

Nope. Try the next prime number, 149...

Nope. Try the next prime number, 151...

Nope. Try the next prime number, 157...

Nope. Try the next prime number, 163...

Nope. Try the next prime number, 167...

Nope. Try the next prime number, 173...

Nope. Try the next prime number, 179...

Nope. Try the next prime number, 181...

Nope. Try the next prime number, 191...

Nope. Try the next prime number, 193...

Nope. Try the next prime number, 197...

Nope. Try the next prime number, 199...

Nope. Try the next prime number, 211...

Nope. Try the next prime number, 223...

Nope. Try the next prime number, 227...

Nope. Try the next prime number, 229...

Nope. Try the next prime number, 233...

Nope. Try the next prime number, 239...

Nope. Try the next prime number, 241...

Nope. Try the next prime number, 251...

Nope. Try the next prime number, 257...

Nope. Try the next prime number, 263...

Nope. Try the next prime number, 269...

Nope. Try the next prime number, 271...

Nope. Try the next prime number, 277...

Nope. Try the next prime number, 281...

Nope. Try the next prime number, 283...

Nope. Try the next prime number, 293...

Nope. Try the next prime number, 307...

Nope. Try the next prime number, 311...

Nope. Try the next prime number, 313...

Nope. Try the next prime number, 317...

Nope. Try the next prime number, 331...

Nope. Try the next prime number, 337...

Nope. Try the next prime number, 347...

Nope. Try the next prime number, 349...

Nope. Try the next prime number, 353...

Nope. Try the next prime number, 359...

Nope. Try the next prime number, 367...

Nope. Try the next prime number, 373...

Nope. Try the next prime number, 379...

Nope. Try the next prime number, 383...

Nope. Try the next prime number, 389...

Nope. Try the next prime number, 397...

Nope. Try the next prime number, 401...

Nope. Try the next prime number, 409...

Nope. Try the next prime number, 419...

Nope. Try the next prime number, 421...

Nope. Try the next prime number, 431...

Nope. Try the next prime number, 433...

Nope. Try the next prime number, 439...

Nope. Try the next prime number, 443...

Nope. Try the next prime number, 449...

Nope. Try the next prime number, 457...

Nope. Try the next prime number, 461...

Nope. Try the next prime number, 463...

Nope. Try the next prime number, 467...

Nope. Try the next prime number, 479...

Nope. Try the next prime number, 487...

Nope. Try the next prime number, 491...

Nope. Try the next prime number, 499...

Nope. Try the next prime number, 503...

Nope. Try the next prime number, 509...

Nope. Try the next prime number, 521...

Nope. Try the next prime number, 523...

Nope. Try the next prime number, 541...

Nope. Try the next prime number, 547...

Nope. Try the next prime number, 557...

Nope. Try the next prime number, 563...

Nope. Try the next prime number, 569...

Nope. Try the next prime number, 571...

Nope. Try the next prime number, 577...

Nope. Try the next prime number, 587...

Nope. Try the next prime number, 593...

Nope. Try the next prime number, 599...

Nope. Try the next prime number, 601...

Nope. Try the next prime number, 607...

Nope. Try the next prime number, 613...

Nope. Try the next prime number, 617...

Nope. Try the next prime number, 619...

Nope. Try the next prime number, 631...

Nope. Try the next prime number, 641...

Nope. Try the next prime number, 643...

Nope. Try the next prime number, 647...

Nope. Try the next prime number, 653...

Nope. Try the next prime number, 659...

Nope. Try the next prime number, 661...

Nope. Try the next prime number, 673...

Nope. Try the next prime number, 677...

Nope. Try the next prime number, 683...

Nope. Try the next prime number, 691...

Nope. Try the next prime number, 701...

Nope. Try the next prime number, 709...

Nope. Try the next prime number, 719...

Nope. Try the next prime number, 727...

Nope. Try the next prime number, 733...

Nope. Try the next prime number, 739...

Nope. Try the next prime number, 743...

Nope. Try the next prime number, 751...

Nope. Try the next prime number, 757...

Nope. Try the next prime number, 761...

Nope. Try the next prime number, 769...

Nope. Try the next prime number, 773...

Nope. Try the next prime number, 787...

Nope. Try the next prime number, 797...

Nope. Try the next prime number, 809...

Nope. Try the next prime number, 811...

Nope. Try the next prime number, 821...

Nope. Try the next prime number, 823...

Nope. Try the next prime number, 827...

Nope. Try the next prime number, 829...

Nope. Try the next prime number, 839...

Nope. Try the next prime number, 853...

Nope. Try the next prime number, 857...

Nope. Try the next prime number, 859...

Nope. Try the next prime number, 863...

Nope. Try the next prime number, 877...

Nope. Try the next prime number, 881...

Nope. Try the next prime number, 883...

Nope. Try the next prime number, 887...

Nope. Try the next prime number, 907...

Nope. Try the next prime number, 911...

Nope. Try the next prime number, 919...

Nope. Try the next prime number, 929...

Nope. Try the next prime number, 937...

Nope. Try the next prime number, 941...

Nope. Try the next prime number, 947...

Nope. Try the next prime number, 953...

Nope. Try the next prime number, 967...

Nope. Try the next prime number, 971...

Nope. Try the next prime number, 977...

Nope. Try the next prime number, 983...

Nope. Try the next prime number, 991...

Nope. Try the next prime number, 997...

Nope. Try the next prime number, 1009...

Nope. Try the next prime number, 1013...

Nope. Try the next prime number, 1019...

Nope. Try the next prime number, 1021...

Nope. Try the next prime number, 1031...

Nope. Try the next prime number, 1033...

Nope. Try the next prime number, 1039...

Nope. Try the next prime number, 1049...

Nope. Try the next prime number, 1051...

Nope. Try the next prime number, 1061...

Nope. Try the next prime number, 1063...

Nope. Try the next prime number, 1069...

Nope. Try the next prime number, 1087...

Nope. Try the next prime number, 1091...

Nope. Try the next prime number, 1093...

Nope. Try the next prime number, 1097...

Nope. Try the next prime number, 1103...

No good. 1103 is larger than 1100. So we're done reducing.

Congratulations! Here's your final answer to 87/100 + 7/11

87
100
+
7
11
=
1657
1100
© 2014 Randy Tayler