3(u+7)+8u=-34

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Solution for 3(u+7)+8u=-34 equation: 



3(u+7)+8u=-34

We move all terms to the left:

3(u+7)+8u-(-34)=0

We add all the numbers together, and all the variables

8u+3(u+7)+34=0

We multiply parentheses

8u+3u+21+34=0

We add all the numbers together, and all the variables

11u+55=0

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

11u=-55

u=-55/11

u=-5

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