-7u-40=-9(u+4)

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Solution for -7u-40=-9(u+4) equation: 



-7u-40=-9(u+4)

We move all terms to the left:

-7u-40-(-9(u+4))=0



We calculate terms in parentheses: -(-9(u+4)), so:

-9(u+4)

We multiply parentheses

-9u-36

Back to the equation:

-(-9u-36)



We get rid of parentheses

-7u+9u+36-40=0

We add all the numbers together, and all the variables

2u-4=0

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

2u=4

u=4/2

u=2

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