mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mi>a</mi><mo>+</mo><mfrac><mn>1</mn><mi>a</mi></mfrac><mo>-</mo><mn>4</mn></mrow></mfenced><mfenced><mrow><mi>a</mi><mo>-</mo><mfrac><mn>1</mn><mi>a</mi></mfrac><mo>+</mo><mn>9</mn></mrow></mfenced></math>