-20=-4-2m

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Solution for -20=-4-2m equation: 


Simplifying
-20 = -4 + -2m

Solving
-20 = -4 + -2m

Solving for variable 'm'.

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

Add '2m' to each side of the equation.
-20 + 2m = -4 + -2m + 2m

Combine like terms: -2m + 2m = 0
-20 + 2m = -4 + 0
-20 + 2m = -4

Add '20' to each side of the equation.
-20 + 20 + 2m = -4 + 20

Combine like terms: -20 + 20 = 0
0 + 2m = -4 + 20
2m = -4 + 20

Combine like terms: -4 + 20 = 16
2m = 16

Divide each side by '2'.
m = 8

Simplifying
m = 8

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