6x+18=-3x-9

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Solution for 6x+18=-3x-9 equation: 



6x+18=-3x-9

We move all terms to the left:

6x+18-(-3x-9)=0

We get rid of parentheses

6x+3x+9+18=0

We add all the numbers together, and all the variables

9x+27=0

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

9x=-27

x=-27/9

x=-3

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