115=5k-3(7-4k)

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Solution for 115=5k-3(7-4k) equation: 



115=5k-3(7-4k)

We move all terms to the left:

115-(5k-3(7-4k))=0

We add all the numbers together, and all the variables

-(5k-3(-4k+7))+115=0



We calculate terms in parentheses: -(5k-3(-4k+7)), so:

5k-3(-4k+7)

We multiply parentheses

5k+12k-21

We add all the numbers together, and all the variables

17k-21

Back to the equation:

-(17k-21)



We get rid of parentheses

-17k+21+115=0

We add all the numbers together, and all the variables

-17k+136=0

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

-17k=-136

k=-136/-17

k=+8

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