-15=-7u+5(u-7)

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Solution for -15=-7u+5(u-7) equation: 



-15=-7u+5(u-7)

We move all terms to the left:

-15-(-7u+5(u-7))=0



We calculate terms in parentheses: -(-7u+5(u-7)), so:

-7u+5(u-7)

We multiply parentheses

-7u+5u-35

We add all the numbers together, and all the variables

-2u-35

Back to the equation:

-(-2u-35)



We get rid of parentheses

2u+35-15=0

We add all the numbers together, and all the variables

2u+20=0

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

2u=-20

u=-20/2

u=-10

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