X+12+3x=5+x-9

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Solution for X+12+3x=5+x-9 equation: 



X+12+3X=5+X-9

We move all terms to the left:

X+12+3X-(5+X-9)=0

We add all the numbers together, and all the variables

X+3X-(X-4)+12=0

We add all the numbers together, and all the variables

4X-(X-4)+12=0

We get rid of parentheses

4X-X+4+12=0

We add all the numbers together, and all the variables

3X+16=0

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

3X=-16

X=-16/3

X=-5+1/3

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