1-x=7+x

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Solution for 1-x=7+x equation: 



1-x=7+x

We move all terms to the left:

1-x-(7+x)=0

We add all the numbers together, and all the variables

-x-(x+7)+1=0

We add all the numbers together, and all the variables

-1x-(x+7)+1=0

We get rid of parentheses

-1x-x-7+1=0

We add all the numbers together, and all the variables

-2x-6=0

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

-2x=6

x=6/-2

x=-3

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