Question

I NEED HELP WITH THIS MATH PROBLEM!!!!

Which expression is equivalent to 6f-1+7f-8?
13f+7 5f-1
-f+7 or -9+13f

Answer 1

-9+13f

Explanation:

6f+7f = 13f

-1 + -8= -9

So the sum of them is -9+13f

Answer 2

Explanation:

6f - 1 + 7f - 8 = 6f + 7f - 1 - 8

= 13f - 9

Combine like terms. Like terms have same variable with same power.