-216=9(-10-x)

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Solution for -216=9(-10-x) equation: 



-216=9(-10-x)

We move all terms to the left:

-216-(9(-10-x))=0

We add all the numbers together, and all the variables

-(9(-1x-10))-216=0



We calculate terms in parentheses: -(9(-1x-10)), so:

9(-1x-10)

We multiply parentheses

-9x-90

Back to the equation:

-(-9x-90)



We get rid of parentheses

9x+90-216=0

We add all the numbers together, and all the variables

9x-126=0

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

9x=126

x=126/9

x=14

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