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3u-8+3(3u+2)=-2(u+7)
We move all terms to the left:
3u-8+3(3u+2)-(-2(u+7))=0
We multiply parentheses
3u+9u-(-2(u+7))+6-8=0
We calculate terms in parentheses: -(-2(u+7)), so:We add all the numbers together, and all the variables
-2(u+7)
We multiply parentheses
-2u-14
Back to the equation:
-(-2u-14)
12u-(-2u-14)-2=0
We get rid of parentheses
12u+2u+14-2=0
We add all the numbers together, and all the variables
14u+12=0
We move all terms containing u to the left, all other terms to the right
14u=-12
u=-12/14
u=-6/7
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