18=2x-(4x-9x)

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Solution for 18=2x-(4x-9x) equation: 



18=2x-(4x-9x)

We move all terms to the left:

18-(2x-(4x-9x))=0

We add all the numbers together, and all the variables

-(2x-(-5x))+18=0



We calculate terms in parentheses: -(2x-(-5x)), so:

2x-(-5x)

We get rid of parentheses

2x+5x

We add all the numbers together, and all the variables

7x

Back to the equation:

-(7x)



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

-7x=-18

x=-18/-7

x=2+4/7

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