12=7u+5

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Solution for 12=7u+5 equation: 



12=7u+5

We move all terms to the left:

12-(7u+5)=0

We get rid of parentheses

-7u-5+12=0

We add all the numbers together, and all the variables

-7u+7=0

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

-7u=-7

u=-7/-7

u=1

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