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18u-30=-2u+5(4u-6)
We move all terms to the left:
18u-30-(-2u+5(4u-6))=0
We calculate terms in parentheses: -(-2u+5(4u-6)), so:We get rid of parentheses
-2u+5(4u-6)
We multiply parentheses
-2u+20u-30
We add all the numbers together, and all the variables
18u-30
Back to the equation:
-(18u-30)
18u-18u+30-30=0
We add all the numbers together, and all the variables
=0
u=0/1
u=0
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