9x-7x-15-9x=6+4x-8x

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Solution for 9x-7x-15-9x=6+4x-8x equation: 



9x-7x-15-9x=6+4x-8x

We move all terms to the left:

9x-7x-15-9x-(6+4x-8x)=0

We add all the numbers together, and all the variables

9x-7x-9x-(-4x+6)-15=0

We add all the numbers together, and all the variables

-7x-(-4x+6)-15=0

We get rid of parentheses

-7x+4x-6-15=0

We add all the numbers together, and all the variables

-3x-21=0

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

-3x=21

x=21/-3

x=-7

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