-2(m+4)=40

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Solution for -2(m+4)=40 equation: 


Simplifying
-2(m + 4) = 40

Reorder the terms:
-2(4 + m) = 40
(4 * -2 + m * -2) = 40
(-8 + -2m) = 40

Solving
-8 + -2m = 40

Solving for variable 'm'.

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

Add '8' to each side of the equation.
-8 + 8 + -2m = 40 + 8

Combine like terms: -8 + 8 = 0
0 + -2m = 40 + 8
-2m = 40 + 8

Combine like terms: 40 + 8 = 48
-2m = 48

Divide each side by '-2'.
m = -24

Simplifying
m = -24

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