-x-12=2x+18

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Solution for -x-12=2x+18 equation: 



-x-12=2x+18

We move all terms to the left:

-x-12-(2x+18)=0

We add all the numbers together, and all the variables

-1x-(2x+18)-12=0

We get rid of parentheses

-1x-2x-18-12=0

We add all the numbers together, and all the variables

-3x-30=0

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

-3x=30

x=30/-3

x=-10

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