X+(2x+12)=9

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Solution for X+(2x+12)=9 equation: 



X+(2X+12)=9

We move all terms to the left:

X+(2X+12)-(9)=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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