2(m-1)=12

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Solution for 2(m-1)=12 equation: 



2(m-1)=12

We move all terms to the left:

2(m-1)-(12)=0

We multiply parentheses

2m-2-12=0

We add all the numbers together, and all the variables

2m-14=0

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

2m=14

m=14/2

m=7

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