-7m-12=-40

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Solution for -7m-12=-40 equation: 


Simplifying
-7m + -12 = -40

Reorder the terms:
-12 + -7m = -40

Solving
-12 + -7m = -40

Solving for variable 'm'.

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

Add '12' to each side of the equation.
-12 + 12 + -7m = -40 + 12

Combine like terms: -12 + 12 = 0
0 + -7m = -40 + 12
-7m = -40 + 12

Combine like terms: -40 + 12 = -28
-7m = -28

Divide each side by '-7'.
m = 4

Simplifying
m = 4

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