-7(r-1)=15-5r

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Solution for -7(r-1)=15-5r equation: 



-7(r-1)=15-5r

We move all terms to the left:

-7(r-1)-(15-5r)=0

We add all the numbers together, and all the variables

-7(r-1)-(-5r+15)=0

We multiply parentheses

-7r-(-5r+15)+7=0

We get rid of parentheses

-7r+5r-15+7=0

We add all the numbers together, and all the variables

-2r-8=0

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

-2r=8

r=8/-2

r=-4

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