X-6x-21=21

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Solution for X-6x-21=21 equation: 



X-6X-21=21

We move all terms to the left:

X-6X-21-(21)=0

We add all the numbers together, and all the variables

-5X-42=0

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

-5X=42

X=42/-5

X=-8+2/5

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