-243=-9(10+q)

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



-243=-9(10+q)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(-9(q+10)), so:

-9(q+10)

We multiply parentheses

-9q-90

Back to the equation:

-(-9q-90)



We get rid of parentheses

9q+90-243=0

We add all the numbers together, and all the variables

9q-153=0

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

9q=153

q=153/9

q=17

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