X+(x)x+x=12

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



X+(X)X+X=12

We move all terms to the left:

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

We add all the numbers together, and all the variables

2X+XX-12=0

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

2X+XX=12

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