-7u+23=-2(u-9)

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Solution for -7u+23=-2(u-9) equation: 



-7u+23=-2(u-9)

We move all terms to the left:

-7u+23-(-2(u-9))=0



We calculate terms in parentheses: -(-2(u-9)), so:

-2(u-9)

We multiply parentheses

-2u+18

Back to the equation:

-(-2u+18)



We get rid of parentheses

-7u+2u-18+23=0

We add all the numbers together, and all the variables

-5u+5=0

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

-5u=-5

u=-5/-5

u=1

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