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5(u+4)-2u=-7
We move all terms to the left:
5(u+4)-2u-(-7)=0
We add all the numbers together, and all the variables
-2u+5(u+4)+7=0
We multiply parentheses
-2u+5u+20+7=0
We add all the numbers together, and all the variables
3u+27=0
We move all terms containing u to the left, all other terms to the right
3u=-27
u=-27/3
u=-9
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