-3x-9=-4x+9

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Solution for -3x-9=-4x+9 equation: 



-3x-9=-4x+9

We move all terms to the left:

-3x-9-(-4x+9)=0

We get rid of parentheses

-3x+4x-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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