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2(u-1)-2=-3(-9u+2)-9u
We move all terms to the left:
2(u-1)-2-(-3(-9u+2)-9u)=0
We multiply parentheses
2u-(-3(-9u+2)-9u)-2-2=0
We calculate terms in parentheses: -(-3(-9u+2)-9u), so:We add all the numbers together, and all the variables
-3(-9u+2)-9u
We add all the numbers together, and all the variables
-9u-3(-9u+2)
We multiply parentheses
-9u+27u-6
We add all the numbers together, and all the variables
18u-6
Back to the equation:
-(18u-6)
2u-(18u-6)-4=0
We get rid of parentheses
2u-18u+6-4=0
We add all the numbers together, and all the variables
-16u+2=0
We move all terms containing u to the left, all other terms to the right
-16u=-2
u=-2/-16
u=1/8
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