12(23r-12)=15(15r-13)

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Solution for 12(23r-12)=15(15r-13) equation: 



12(23r-12)=15(15r-13)

We move all terms to the left:

12(23r-12)-(15(15r-13))=0

We multiply parentheses

276r-(15(15r-13))-144=0



We calculate terms in parentheses: -(15(15r-13)), so:

15(15r-13)

We multiply parentheses

225r-195

Back to the equation:

-(225r-195)



We get rid of parentheses

276r-225r+195-144=0

We add all the numbers together, and all the variables

51r+51=0

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

51r=-51

r=-51/51

r=-1

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