18=7(x+4)-9x

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Solution for 18=7(x+4)-9x equation: 



18=7(x+4)-9x

We move all terms to the left:

18-(7(x+4)-9x)=0



We calculate terms in parentheses: -(7(x+4)-9x), so:

7(x+4)-9x

We add all the numbers together, and all the variables

-9x+7(x+4)

We multiply parentheses

-9x+7x+28

We add all the numbers together, and all the variables

-2x+28

Back to the equation:

-(-2x+28)



We get rid of parentheses

2x-28+18=0

We add all the numbers together, and all the variables

2x-10=0

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

2x=10

x=10/2

x=5

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