X/8-x=21

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Solution for X/8-x=21 equation: 



X/8-X=21

We move all terms to the left:

X/8-X-(21)=0

We add all the numbers together, and all the variables

-1X+X/8-21=0

We multiply all the terms by the denominator


-1X*8+X-21*8=0

We add all the numbers together, and all the variables

X-1X*8-168=0

Wy multiply elements

X-8X-168=0

We add all the numbers together, and all the variables

-7X-168=0

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

-7X=168

X=168/-7

X=-24

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