7u+12=13u

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Solution for 7u+12=13u equation: 



7u+12=13u

We move all terms to the left:

7u+12-(13u)=0

We add all the numbers together, and all the variables

-6u+12=0

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

-6u=-12

u=-12/-6

u=+2

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