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Best Answer
x - y = 5
+ 2x + y = 7
=> 3x + 0 = 12
=> 3x = 12
=> 3x/3 = 12/3
=> x=4
x-y=5 2x+y=7
=>4-y=5 =>2(4)+y=7
=>y=4-5 =>8+y=7
=>y=-1 =>y=-1
So, the answer would be x=4 and y=-1
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