<math xmlns = "https://www.w3.org/1998/Math/MathML"> <mfrac linethickness = '3px'> <mfrac bevelled = 'true'> <mn>1</mn> <mi>x</mi> </mfrac> <mrow> <mi>y</mi> <mo>-</mo> <mn>2</mn> </mrow> </mfrac> </math>
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