-8u+3(u-7)=-31

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Solution for -8u+3(u-7)=-31 equation: 



-8u+3(u-7)=-31

We move all terms to the left:

-8u+3(u-7)-(-31)=0

We add all the numbers together, and all the variables

-8u+3(u-7)+31=0

We multiply parentheses

-8u+3u-21+31=0

We add all the numbers together, and all the variables

-5u+10=0

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

-5u=-10

u=-10/-5

u=+2

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