9-m=13

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Solution for 9-m=13 equation: 


Simplifying
9 + -1m = 13

Solving
9 + -1m = 13

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 + -1m = 13 + -9

Combine like terms: 9 + -9 = 0
0 + -1m = 13 + -9
-1m = 13 + -9

Combine like terms: 13 + -9 = 4
-1m = 4

Divide each side by '-1'.
m = -4

Simplifying
m = -4

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