7x+9=-2x-18

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Solution for 7x+9=-2x-18 equation: 



7x+9=-2x-18

We move all terms to the left:

7x+9-(-2x-18)=0

We get rid of parentheses

7x+2x+18+9=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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