3(m-1)+7=13

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Solution for 3(m-1)+7=13 equation: 



3(m-1)+7=13

We move all terms to the left:

3(m-1)+7-(13)=0

We add all the numbers together, and all the variables

3(m-1)-6=0

We multiply parentheses

3m-3-6=0

We add all the numbers together, and all the variables

3m-9=0

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

3m=9

m=9/3

m=3

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