X=2,y=-1

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Solution for X=2,y=-1 equation: 



X=2.X=-1

We move all terms to the left:

X-(2.X)=0

We add all the numbers together, and all the variables

X-(+2.X)=0

We get rid of parentheses

X-2.X=0

We add all the numbers together, and all the variables

-X=0

X=0/-1

X=0

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