7(r-7)=5(3r+5)

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Solution for 7(r-7)=5(3r+5) equation: 



7(r-7)=5(3r+5)

We move all terms to the left:

7(r-7)-(5(3r+5))=0

We multiply parentheses

7r-(5(3r+5))-49=0



We calculate terms in parentheses: -(5(3r+5)), so:

5(3r+5)

We multiply parentheses

15r+25

Back to the equation:

-(15r+25)



We get rid of parentheses

7r-15r-25-49=0

We add all the numbers together, and all the variables

-8r-74=0

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

-8r=74

r=74/-8

r=-9+1/4

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