13m+40-3m=80

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Solution for 13m+40-3m=80 equation: 



13m+40-3m=80

We move all terms to the left:

13m+40-3m-(80)=0

We add all the numbers together, and all the variables

10m-40=0

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

10m=40

m=40/10

m=4

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