-3(1-7m)=102

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Solution for -3(1-7m)=102 equation: 



-3(1-7m)=102

We move all terms to the left:

-3(1-7m)-(102)=0

We add all the numbers together, and all the variables

-3(-7m+1)-102=0

We multiply parentheses

21m-3-102=0

We add all the numbers together, and all the variables

21m-105=0

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

21m=105

m=105/21

m=5

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