4m+9+5m-12=42

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Solution for 4m+9+5m-12=42 equation:


Simplifying
4m + 9 + 5m + -12 = 42

Reorder the terms:
9 + -12 + 4m + 5m = 42

Combine like terms: 9 + -12 = -3
-3 + 4m + 5m = 42

Combine like terms: 4m + 5m = 9m
-3 + 9m = 42

Solving
-3 + 9m = 42

Solving for variable 'm'.

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

Add '3' to each side of the equation.
-3 + 3 + 9m = 42 + 3

Combine like terms: -3 + 3 = 0
0 + 9m = 42 + 3
9m = 42 + 3

Combine like terms: 42 + 3 = 45
9m = 45

Divide each side by '9'.
m = 5

Simplifying
m = 5

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