8m+13m-2=40

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Solution for 8m+13m-2=40 equation: 



8m+13m-2=40

We move all terms to the left:

8m+13m-2-(40)=0

We add all the numbers together, and all the variables

21m-42=0

We move all terms containing m to the left, all other terms to the right

21m=42

m=42/21

m=2

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