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3u-40=5u-67
We move all terms to the left:
3u-40-(5u-67)=0
We get rid of parentheses
3u-5u+67-40=0
We add all the numbers together, and all the variables
-2u+27=0
We move all terms containing u to the left, all other terms to the right
-2u=-27
u=-27/-2
u=13+1/2
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