1-7x=9+x

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Solution for 1-7x=9+x equation: 



1-7x=9+x

We move all terms to the left:

1-7x-(9+x)=0

We add all the numbers together, and all the variables

-7x-(x+9)+1=0

We get rid of parentheses

-7x-x-9+1=0

We add all the numbers together, and all the variables

-8x-8=0

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

-8x=8

x=8/-8

x=-1

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