3(-2r+1)=-39

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Solution for 3(-2r+1)=-39 equation: 



3(-2r+1)=-39

We move all terms to the left:

3(-2r+1)-(-39)=0

We add all the numbers together, and all the variables

3(-2r+1)+39=0

We multiply parentheses

-6r+3+39=0

We add all the numbers together, and all the variables

-6r+42=0

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

-6r=-42

r=-42/-6

r=+7

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