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-12=5(u-3)-2u
We move all terms to the left:
-12-(5(u-3)-2u)=0
We calculate terms in parentheses: -(5(u-3)-2u), so:We get rid of parentheses
5(u-3)-2u
We add all the numbers together, and all the variables
-2u+5(u-3)
We multiply parentheses
-2u+5u-15
We add all the numbers together, and all the variables
3u-15
Back to the equation:
-(3u-15)
-3u+15-12=0
We add all the numbers together, and all the variables
-3u+3=0
We move all terms containing u to the left, all other terms to the right
-3u=-3
u=-3/-3
u=1
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