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Solve Systems of Equations by Algebraically. Help plz

Solve Systems of Equations by Algebraically. Help plz-example-1
Solve Systems of Equations by Algebraically. Help plz-example-1
Solve Systems of Equations by Algebraically. Help plz-example-2

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-x=y then get x=-2-2(-x) so the x will be 2=2x-x .the answer become x=2
User TimE
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