4-m=20

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Solution for 4-m=20 equation: 


Simplifying
4 + -1m = 20

Solving
4 + -1m = 20

Solving for variable 'm'.

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

Add '-4' to each side of the equation.
4 + -4 + -1m = 20 + -4

Combine like terms: 4 + -4 = 0
0 + -1m = 20 + -4
-1m = 20 + -4

Combine like terms: 20 + -4 = 16
-1m = 16

Divide each side by '-1'.
m = -16

Simplifying
m = -16

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