x+9=-2x+12

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Solution for x+9=-2x+12 equation: 



x+9=-2x+12

We move all terms to the left:

x+9-(-2x+12)=0

We get rid of parentheses

x+2x-12+9=0

We add all the numbers together, and all the variables

3x-3=0

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

3x=3

x=3/3

x=1

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