2u+31=4u-7

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Solution for 2u+31=4u-7 equation: 



2u+31=4u-7

We move all terms to the left:

2u+31-(4u-7)=0

We get rid of parentheses

2u-4u+7+31=0

We add all the numbers together, and all the variables

-2u+38=0

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

-2u=-38

u=-38/-2

u=+19

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