.5m=m-20

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Solution for .5m=m-20 equation: 


Simplifying
0.5m = m + -20

Reorder the terms:
0.5m = -20 + m

Solving
0.5m = -20 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
0.5m + -1m = -20 + m + -1m

Combine like terms: 0.5m + -1m = -0.5m
-0.5m = -20 + m + -1m

Combine like terms: m + -1m = 0
-0.5m = -20 + 0
-0.5m = -20

Divide each side by '-0.5'.
m = 40

Simplifying
m = 40

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