math help

What is 100/24 + 6/9?

What is 100/24 + 6/9?

This is how to add

100
24
+
6
9

Step 1

Can you add yet? Nope! The denominators don't match. We need a common denominator. So next we take both denominators and multiply them. Next, take each numerator and multiply it by the denominator of the other term.

So, we multiply 100 by 9, and get 900, then we multiply 24 by 9 and get 216.

100/24 times 9

Now for the second term. You multiply 6 by 24, and get 144, then multiply 24 by 9 and get 216.

6/9 times 24

We now have a new problem, that looks like this:

900
216
+
144
216

Step 2

Since our denominators match, we can add the numerators.

900 + 144 = 1044

Answer:

1044
216

Step 3

Now, do we need to simplify this fraction?

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

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

1044
216
÷ 2 =
522
108

Now, try the same number again.

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

522
108
÷ 2 =
261
54

Now, try the same number again.

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

Are both the numerator and the denominator evenly divisible by 3? Yes! So we reduce it:

261
54
÷ 3 =
87
18

Now, try the same number again.

Are both the numerator and the denominator evenly divisible by 3? Yes! So we reduce it:

87
18
÷ 3 =
29
6

Now, try the same number again.

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

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

No good. 7 is larger than 6. So we're done reducing.

Congratulations! Here's your final answer to 100/24 + 6/9

100
24
+
6
9
=
29
6
© 2014 Randy Tayler