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-22=2+4u
We move all terms to the left:
-22-(2+4u)=0
We add all the numbers together, and all the variables
-(4u+2)-22=0
We get rid of parentheses
-4u-2-22=0
We add all the numbers together, and all the variables
-4u-24=0
We move all terms containing u to the left, all other terms to the right
-4u=24
u=24/-4
u=-6
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