-(7-4u)=9

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



-(7-4u)=9

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

4u-7-9=0

We add all the numbers together, and all the variables

4u-16=0

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

4u=16

u=16/4

u=4

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