245=5r-8(4r-7)

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Solution for 245=5r-8(4r-7) equation: 



245=5r-8(4r-7)

We move all terms to the left:

245-(5r-8(4r-7))=0



We calculate terms in parentheses: -(5r-8(4r-7)), so:

5r-8(4r-7)

We multiply parentheses

5r-32r+56

We add all the numbers together, and all the variables

-27r+56

Back to the equation:

-(-27r+56)



We get rid of parentheses

27r-56+245=0

We add all the numbers together, and all the variables

27r+189=0

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

27r=-189

r=-189/27

r=-7

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