7(m-78)=63

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Solution for 7(m-78)=63 equation: 



7(m-78)=63

We move all terms to the left:

7(m-78)-(63)=0

We multiply parentheses

7m-546-63=0

We add all the numbers together, and all the variables

7m-609=0

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

7m=609

m=609/7

m=87

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