-243=(-9)(10+x)

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Solution for -243=(-9)(10+x) equation: 



-243=(-9)(10+x)

We move all terms to the left:

-243-((-9)(10+x))=0

We add all the numbers together, and all the variables

-((-9)(x+10))-243=0

We multiply parentheses ..

-((-9x-90))-243=0



We calculate terms in parentheses: -((-9x-90)), so:

(-9x-90)

We get rid of parentheses

-9x-90

Back to the equation:

-(-9x-90)



We get rid of parentheses

9x+90-243=0

We add all the numbers together, and all the variables

9x-153=0

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

9x=153

x=153/9

x=17

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