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you only need part of the given piece by piece: 2x+y=3x=2y-1

take 2x+y=3x

x=y

now you take the other half

3x=2y-1

3(y)=2y-1

y=-1

note that x=y, so x=-1 as well

in conclusion both x=-1, y=-1

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14y ago

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