X+8x+2x=121

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Solution for X+8x+2x=121 equation: 



X+8X+2X=121

We move all terms to the left:

X+8X+2X-(121)=0

We add all the numbers together, and all the variables

11X-121=0

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

11X=121

X=121/11

X=11

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