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?
\(x + y = 7\) | \(x - y = -1\) | \(y - x = 1\) |
\(2x + 3y = 18\) | \(5x - 2y = 7\) | \(4y - x = 13\) |
\(xy - 10 = 9\) | \(180 - 2x + y = 178\) | \(20x - 3xy = 33\) |
\(x^2 + y = 13\) | \(10x - y^2 = 14\) | \(y^2 - x^2 = 7\) |
\(x^2y + 13 = 49\) | \(x^2y^2 - 2x = 152\) | \(x^2y^2 = 576\) |
\(x! + y = 10\) | \(5(x + y) = 52\) | \(3y \div x = 4\) |
\(\frac{xy}{2}= 6\) | \(\frac{84}{xy}= 7\) | \(\frac{15y}{5x}= y\) |
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