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2(u-5)-2=-2
We move all terms to the left:
2(u-5)-2-(-2)=0
We add all the numbers together, and all the variables
2(u-5)=0
We multiply parentheses
2u-10=0
We move all terms containing u to the left, all other terms to the right
2u=10
u=10/2
u=5
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