13m-8=31

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Solution for 13m-8=31 equation: 


Simplifying
13m + -8 = 31

Reorder the terms:
-8 + 13m = 31

Solving
-8 + 13m = 31

Solving for variable 'm'.

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

Add '8' to each side of the equation.
-8 + 8 + 13m = 31 + 8

Combine like terms: -8 + 8 = 0
0 + 13m = 31 + 8
13m = 31 + 8

Combine like terms: 31 + 8 = 39
13m = 39

Divide each side by '13'.
m = 3

Simplifying
m = 3

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