-9=-1+2x

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Solution for -9=-1+2x equation: 



-9=-1+2x

We move all terms to the left:

-9-(-1+2x)=0

We add all the numbers together, and all the variables

-(2x-1)-9=0

We get rid of parentheses

-2x+1-9=0

We add all the numbers together, and all the variables

-2x-8=0

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

-2x=8

x=8/-2

x=-4

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