Is -8 a solution of -7f= 48 -f?

Question

Select the correct choice below and, if necessary fill in the answer box to complete your choice. A.no, because replacing f with -8 and simplifying left side results in □ and simplifying right side results in □. (B) yes. Because replacing f with -8 and simplifying left side results in □ and simplifying right side in □. Which answer is correct??

Answer 1

Another way to answer this question is to solve for f.

-7f = 48 - f

-6f = 48

f = -48/6 = -8

Answer 2

Let's compare the two sides of the equation. The "equal sign" is the balance between the two sides:

When we replace "f" with "-8" we see that both sides are 56 and the two "56's" balance so "-8" IS a solution.