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<math> <mi>x</mi> <mo>+</mo> <mstyle background='yellow'> <mpadded lspace='+50px'> <mfrac> <mn>1</mn> <mi>ℏ</mi> </mfrac> <mo>+</mo> <mi>y</mi> </mpadded> </mstyle> <mo>+</mo> <mi>x</mi> </math>