Solve for m. 7m + 8 = 8m

7m+8=8m

7m-8m = - 8

Whenever you move a number for the opposite side, you change the sign. For example, the number is 6, then you move it to the other side. The sign becomes negative 6.

-m=-8

The m cannot be a negative sign. So you multiply it by - 1 and for - 8.

-1 (-m) = - 1 (-8)

m = 8

Double check answer if you want to:

7m+8=8m

Substitute the answer for m.

7 (8) + 8=8 (8)

64=64

So the answer is correct. m=8