8x+2x+x-8x=12

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Solution for 8x+2x+x-8x=12 equation: 



8x+2x+x-8x=12

We move all terms to the left:

8x+2x+x-8x-(12)=0

We add all the numbers together, and all the variables

3x-12=0

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

3x=12

x=12/3

x=4

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