-3(u-7)=9u+45

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Solution for -3(u-7)=9u+45 equation: 



-3(u-7)=9u+45

We move all terms to the left:

-3(u-7)-(9u+45)=0

We multiply parentheses

-3u-(9u+45)+21=0

We get rid of parentheses

-3u-9u-45+21=0

We add all the numbers together, and all the variables

-12u-24=0

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

-12u=24

u=24/-12

u=-2

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