Posted by mark on Thursday, February 16, 2012 at 10:11pm.
They cannot be solved. Add 2x to both sides of the second equation in the pair to see this.
You have a typo in the last equation. If it is -y, then they are unsolvable. If positive y, then add the two equations to get 8x = 4 or x = 4/8 = 1/2
It would help if you proofread your questions before you posted them.
4x-y=3
4x+y=1
sorry
and show work
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