20=-4m+2+m-3

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Solution for 20=-4m+2+m-3 equation:


Simplifying
20 = -4m + 2 + m + -3

Reorder the terms:
20 = 2 + -3 + -4m + m

Combine like terms: 2 + -3 = -1
20 = -1 + -4m + m

Combine like terms: -4m + m = -3m
20 = -1 + -3m

Solving
20 = -1 + -3m

Solving for variable 'm'.

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

Add '3m' to each side of the equation.
20 + 3m = -1 + -3m + 3m

Combine like terms: -3m + 3m = 0
20 + 3m = -1 + 0
20 + 3m = -1

Add '-20' to each side of the equation.
20 + -20 + 3m = -1 + -20

Combine like terms: 20 + -20 = 0
0 + 3m = -1 + -20
3m = -1 + -20

Combine like terms: -1 + -20 = -21
3m = -21

Divide each side by '3'.
m = -7

Simplifying
m = -7

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