math help

What is 78/10 + 3/10?

What is 78/10 + 3/10?

This is how we add

78
10
+
3
10

Step 1

Since our denominators match, we can add the numerators.

78 + 3 = 81

So what's the answer so far?

81
10

Step 2

Can this fraction be reduced?

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

No good. So next you try the next prime number, which is 3...

No good. So next you try the next prime number, which is 5...

No good. So next you try the next prime number, which is 7...

No good. So next you try the next prime number, which is 11...

No good. 11 is larger than 10. So we're done reducing.

And we're done! Here's the final answer to 78/10 + 3/10

78
10
+
3
10
=
81
10
© 2014 Randy Tayler