-8u+(1u-3)=9

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Solution for -8u+(1u-3)=9 equation: 



-8u+(1u-3)=9

We move all terms to the left:

-8u+(1u-3)-(9)=0

We add all the numbers together, and all the variables

-8u+(u-3)-9=0

We get rid of parentheses

-8u+u-3-9=0

We add all the numbers together, and all the variables

-7u-12=0

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

-7u=12

u=12/-7

u=-1+5/7

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