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2-(-4u+2)=2u+9
We move all terms to the left:
2-(-4u+2)-(2u+9)=0
We get rid of parentheses
4u-2u-2-9+2=0
We add all the numbers together, and all the variables
2u-9=0
We move all terms containing u to the left, all other terms to the right
2u=9
u=9/2
u=4+1/2
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