13(r-5)=-25(72-r)

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Solution for 13(r-5)=-25(72-r) equation: 



13(r-5)=-25(72-r)

We move all terms to the left:

13(r-5)-(-25(72-r))=0

We add all the numbers together, and all the variables

13(r-5)-(-25(-1r+72))=0

We multiply parentheses

13r-(-25(-1r+72))-65=0



We calculate terms in parentheses: -(-25(-1r+72)), so:

-25(-1r+72)

We multiply parentheses

25r-1800

Back to the equation:

-(25r-1800)



We get rid of parentheses

13r-25r+1800-65=0

We add all the numbers together, and all the variables

-12r+1735=0

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

-12r=-1735

r=-1735/-12

r=144+7/12

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