7u-31=2u+14

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Solution for 7u-31=2u+14 equation: 



7u-31=2u+14

We move all terms to the left:

7u-31-(2u+14)=0

We get rid of parentheses

7u-2u-14-31=0

We add all the numbers together, and all the variables

5u-45=0

We move all terms containing u to the left, all other terms to the right

5u=45

u=45/5

u=9

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