x+9=18+-12x

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Solution for x+9=18+-12x equation: 



x+9=18+-12x

We move all terms to the left:

x+9-(18+-12x)=0

We add all the numbers together, and all the variables

x-(-12x)+9=0

We get rid of parentheses

x+12x+9=0

We add all the numbers together, and all the variables

13x+9=0

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

13x=-9

x=-9/13

x=-9/13

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