-1=7u-22

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Solution for -1=7u-22 equation: 



-1=7u-22

We move all terms to the left:

-1-(7u-22)=0

We get rid of parentheses

-7u+22-1=0

We add all the numbers together, and all the variables

-7u+21=0

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

-7u=-21

u=-21/-7

u=+3

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