(18-7x)9=-216

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Solution for (18-7x)9=-216 equation: 



(18-7x)9=-216

We move all terms to the left:

(18-7x)9-(-216)=0

We add all the numbers together, and all the variables

(-7x+18)9-(-216)=0

We add all the numbers together, and all the variables

(-7x+18)9+216=0

We multiply parentheses

-63x+162+216=0

We add all the numbers together, and all the variables

-63x+378=0

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

-63x=-378

x=-378/-63

x=+6

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