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-4u-4=-2-7u
We move all terms to the left:
-4u-4-(-2-7u)=0
We add all the numbers together, and all the variables
-4u-(-7u-2)-4=0
We get rid of parentheses
-4u+7u+2-4=0
We add all the numbers together, and all the variables
3u-2=0
We move all terms containing u to the left, all other terms to the right
3u=2
u=2/3
u=2/3
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