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31=4u-14
We move all terms to the left:
31-(4u-14)=0
We get rid of parentheses
-4u+14+31=0
We add all the numbers together, and all the variables
-4u+45=0
We move all terms containing u to the left, all other terms to the right
-4u=-45
u=-45/-4
u=11+1/4
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