1-2u=7

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Solution for 1-2u=7 equation: 



1-2u=7

We move all terms to the left:

1-2u-(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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