-2(m+7)+m=64

Solution for -2(m+7)+m=64 equation:

Simplifying
-2(m + 7) + m = 64

Reorder the terms:
-2(7 + m) + m = 64
(7 * -2 + m * -2) + m = 64
(-14 + -2m) + m = 64

Combine like terms: -2m + m = -1m
-14 + -1m = 64

Solving
-14 + -1m = 64

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '14' to each side of the equation.
-14 + 14 + -1m = 64 + 14

Combine like terms: -14 + 14 = 0
0 + -1m = 64 + 14
-1m = 64 + 14

Combine like terms: 64 + 14 = 78
-1m = 78

Divide each side by '-1'.
m = -78

Simplifying
m = -78