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2(u-2)-8u=-22
We move all terms to the left:
2(u-2)-8u-(-22)=0
We add all the numbers together, and all the variables
-8u+2(u-2)+22=0
We multiply parentheses
-8u+2u-4+22=0
We add all the numbers together, and all the variables
-6u+18=0
We move all terms containing u to the left, all other terms to the right
-6u=-18
u=-18/-6
u=+3
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