x = 3
y = 4
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There are of course no end of correct answers and here are some examples.
There is at least one mistake. Can you find the errors when x=3 and y=4?
|x + y = 7||x - y = -1||y - x = 1|
|2x + 3y = 18||5x - 2y = 7||4y - x = 13|
|xy - 10 = 2||180 - 2x + y = 178||20x - 3xy = 33|
|x2 + y = 13||10x - y2 = 14||y2 - x2 = 7|
|x2y + 13 = 49||x2y2 - 2x = 138||x2y3 = 576|
|x! + y = 10||5(x + y) = 35||3y ÷ x = 22|
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The errors are in equations numbered: 9, 18, 20, 21,