Right hand side of equation should look like mirrored copy of left hand side
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <mtable frame="solid" columnalign="center"> <mtr> <mtd> <mrow> <mphantom> <mtext>fail</mtext> </mphantom> <mi mathvariant="normal">H</mi> <mphantom> <mtext>fail</mtext> </mphantom> </mrow> </mtd> </mtr> <mtr> <mtd> <mi mathvariant="normal">T</mi> </mtd> </mtr> <mtr> <mtd> <mi mathvariant="normal">U</mi> </mtd> </mtr> </mtable> <mo>=</mo> <mtable frame="solid" columnalign="center"> <mtr> <mtd> <mi mathvariant="normal">H</mi> </mtd> </mtr> <mtr> <mtd> <mi mathvariant="normal">T</mi> </mtd> </mtr> <mtr> <mtd> <mrow> <mphantom> <mtext>fail</mtext> </mphantom> <mi mathvariant="normal">U</mi> <mphantom> <mtext>fail</mtext> </mphantom> </mrow> </mtd> </mtr> </mtable> </math>
Author: George Chavchanidze, Opera Software ASA