20-3m=11

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Solution for 20-3m=11 equation: 


Simplifying
20 + -3m = 11

Solving
20 + -3m = 11

Solving for variable 'm'.

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

Add '-20' to each side of the equation.
20 + -20 + -3m = 11 + -20

Combine like terms: 20 + -20 = 0
0 + -3m = 11 + -20
-3m = 11 + -20

Combine like terms: 11 + -20 = -9
-3m = -9

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

Simplifying
m = 3

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