X=21,y=3

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Solution for X=21,y=3 equation: 



X=21.X=3

We move all terms to the left:

X-(21.X)=0

We add all the numbers together, and all the variables

X-(+21.X)=0

We get rid of parentheses

X-21.X=0

We add all the numbers together, and all the variables

-20X=0

X=0/-20

X=0

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