-7-12=8(-3r+7)

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Solution for -7-12=8(-3r+7) equation: 



-7-12=8(-3r+7)

We move all terms to the left:

-7-12-(8(-3r+7))=0

We add all the numbers together, and all the variables

-(8(-3r+7))-19=0



We calculate terms in parentheses: -(8(-3r+7)), so:

8(-3r+7)

We multiply parentheses

-24r+56

Back to the equation:

-(-24r+56)



We get rid of parentheses

24r-56-19=0

We add all the numbers together, and all the variables

24r-75=0

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

24r=75

r=75/24

r=3+1/8

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