-3x+(-x)=9=(-x)

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Solution for -3x+(-x)=9=(-x) equation: 



-3x+(-x)=9=(-x)

We move all terms to the left:

-3x+(-x)-(9)=0

We add all the numbers together, and all the variables

-3x+(-1x)-9=0

We get rid of parentheses

-3x-1x-9=0

We add all the numbers together, and all the variables

-4x-9=0

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

-4x=9

x=9/-4

x=-2+1/4

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