-x+9=-2x-9

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



-x+9=-2x-9

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

x+18=0

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

x=-18

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