2(m-39)=78

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Solution for 2(m-39)=78 equation: 



2(m-39)=78

We move all terms to the left:

2(m-39)-(78)=0

We multiply parentheses

2m-78-78=0

We add all the numbers together, and all the variables

2m-156=0

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

2m=156

m=156/2

m=78

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