20=5m-15+4m+12

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Solution for 20=5m-15+4m+12 equation:


Simplifying
20 = 5m + -15 + 4m + 12

Reorder the terms:
20 = -15 + 12 + 5m + 4m

Combine like terms: -15 + 12 = -3
20 = -3 + 5m + 4m

Combine like terms: 5m + 4m = 9m
20 = -3 + 9m

Solving
20 = -3 + 9m

Solving for variable 'm'.

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

Add '-9m' to each side of the equation.
20 + -9m = -3 + 9m + -9m

Combine like terms: 9m + -9m = 0
20 + -9m = -3 + 0
20 + -9m = -3

Add '-20' to each side of the equation.
20 + -20 + -9m = -3 + -20

Combine like terms: 20 + -20 = 0
0 + -9m = -3 + -20
-9m = -3 + -20

Combine like terms: -3 + -20 = -23
-9m = -23

Divide each side by '-9'.
m = 2.555555556

Simplifying
m = 2.555555556

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