-23+2r=-7(r-7)

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Solution for -23+2r=-7(r-7) equation: 



-23+2r=-7(r-7)

We move all terms to the left:

-23+2r-(-7(r-7))=0



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

-7(r-7)

We multiply parentheses

-7r+49

Back to the equation:

-(-7r+49)



We get rid of parentheses

2r+7r-49-23=0

We add all the numbers together, and all the variables

9r-72=0

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

9r=72

r=72/9

r=8

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