-18+30=-3(x+9)

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Solution for -18+30=-3(x+9) equation: 



-18+30=-3(x+9)

We move all terms to the left:

-18+30-(-3(x+9))=0

We add all the numbers together, and all the variables

-(-3(x+9))+12=0



We calculate terms in parentheses: -(-3(x+9)), so:

-3(x+9)

We multiply parentheses

-3x-27

Back to the equation:

-(-3x-27)



We get rid of parentheses

3x+27+12=0

We add all the numbers together, and all the variables

3x+39=0

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

3x=-39

x=-39/3

x=-13

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