-1=-u+3

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Solution for -1=-u+3 equation: 



-1=-u+3

We move all terms to the left:

-1-(-u+3)=0

We add all the numbers together, and all the variables

-(-1u+3)-1=0

We get rid of parentheses

1u-3-1=0

We add all the numbers together, and all the variables

u-4=0

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

u=4

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