7u-49=-9(u-7)

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Solution for 7u-49=-9(u-7) equation: 



7u-49=-9(u-7)

We move all terms to the left:

7u-49-(-9(u-7))=0



We calculate terms in parentheses: -(-9(u-7)), so:

-9(u-7)

We multiply parentheses

-9u+63

Back to the equation:

-(-9u+63)



We get rid of parentheses

7u+9u-63-49=0

We add all the numbers together, and all the variables

16u-112=0

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

16u=112

u=112/16

u=7

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