13+m-4=-40

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Solution for 13+m-4=-40 equation: 


Simplifying
13 + m + -4 = -40

Reorder the terms:
13 + -4 + m = -40

Combine like terms: 13 + -4 = 9
9 + m = -40

Solving
9 + m = -40

Solving for variable 'm'.

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

Add '-9' to each side of the equation.
9 + -9 + m = -40 + -9

Combine like terms: 9 + -9 = 0
0 + m = -40 + -9
m = -40 + -9

Combine like terms: -40 + -9 = -49
m = -49

Simplifying
m = -49

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