-9(r-1)+r=25

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Solution for -9(r-1)+r=25 equation: 



-9(r-1)+r=25

We move all terms to the left:

-9(r-1)+r-(25)=0

We add all the numbers together, and all the variables

r-9(r-1)-25=0

We multiply parentheses

r-9r+9-25=0

We add all the numbers together, and all the variables

-8r-16=0

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

-8r=16

r=16/-8

r=-2

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