m=3(20-m)

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Solution for m=3(20-m) equation: 


Simplifying
m = 3(20 + -1m)
m = (20 * 3 + -1m * 3)
m = (60 + -3m)

Solving
m = 60 + -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.
m + 3m = 60 + -3m + 3m

Combine like terms: m + 3m = 4m
4m = 60 + -3m + 3m

Combine like terms: -3m + 3m = 0
4m = 60 + 0
4m = 60

Divide each side by '4'.
m = 15

Simplifying
m = 15

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