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-9(u-2)=-5u-2
We move all terms to the left:
-9(u-2)-(-5u-2)=0
We multiply parentheses
-9u-(-5u-2)+18=0
We get rid of parentheses
-9u+5u+2+18=0
We add all the numbers together, and all the variables
-4u+20=0
We move all terms containing u to the left, all other terms to the right
-4u=-20
u=-20/-4
u=+5
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