7=-7u+4(u-5)

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Solution for 7=-7u+4(u-5) equation: 



7=-7u+4(u-5)

We move all terms to the left:

7-(-7u+4(u-5))=0



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

-7u+4(u-5)

We multiply parentheses

-7u+4u-20

We add all the numbers together, and all the variables

-3u-20

Back to the equation:

-(-3u-20)



We get rid of parentheses

3u+20+7=0

We add all the numbers together, and all the variables

3u+27=0

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

3u=-27

u=-27/3

u=-9

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