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-12=-6u+2(u-2)
We move all terms to the left:
-12-(-6u+2(u-2))=0
We calculate terms in parentheses: -(-6u+2(u-2)), so:We get rid of parentheses
-6u+2(u-2)
We multiply parentheses
-6u+2u-4
We add all the numbers together, and all the variables
-4u-4
Back to the equation:
-(-4u-4)
4u+4-12=0
We add all the numbers together, and all the variables
4u-8=0
We move all terms containing u to the left, all other terms to the right
4u=8
u=8/4
u=2
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