2u+-1=-7

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Solution for 2u+-1=-7 equation: 



2u+-1=-7

We move all terms to the left:

2u+-1-(-7)=0

We add all the numbers together, and all the variables

2u+6=0

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

2u=-6

u=-6/2

u=-3

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