X=82y-21

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Solution for X=82y-21 equation: 



X=82X-21

We move all terms to the left:

X-(82X-21)=0

We get rid of parentheses

X-82X+21=0

We add all the numbers together, and all the variables

-81X+21=0

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

-81X=-21

X=-21/-81

X=7/27

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