12x+18=-27-3x

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Solution for 12x+18=-27-3x equation: 



12x+18=-27-3x

We move all terms to the left:

12x+18-(-27-3x)=0

We add all the numbers together, and all the variables

12x-(-3x-27)+18=0

We get rid of parentheses

12x+3x+27+18=0

We add all the numbers together, and all the variables

15x+45=0

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

15x=-45

x=-45/15

x=-3

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