<<< omml
<?xml version="1.0" encoding="UTF-8"?>
<m:oMathPara>
  <m:oMathParaPr>
    <m:jc m:val="center" />
  </m:oMathParaPr>
  <m:oMath>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>2</m:t>
    </m:r>
    <m:r>
      <m:rPr>
        <m:sty m:val="p" />
      </m:rPr>
      <m:t>=</m:t>
    </m:r>
    <m:d>
      <m:dPr>
        <m:begChr m:val="(" />
        <m:endChr m:val=")" />
        <m:grow />
      </m:dPr>
      <m:e>
        <m:f>
          <m:fPr>
            <m:type m:val="bar" />
          </m:fPr>
          <m:num>
            <m:d>
              <m:dPr>
                <m:begChr m:val="(" />
                <m:endChr m:val=")" />
                <m:grow />
              </m:dPr>
              <m:e>
                <m:r>
                  <m:rPr>
                    <m:sty m:val="p" />
                  </m:rPr>
                  <m:t>3</m:t>
                </m:r>
                <m:r>
                  <m:rPr>
                    <m:sty m:val="p" />
                  </m:rPr>
                  <m:t>−</m:t>
                </m:r>
                <m:r>
                  <m:rPr>
                    <m:sty m:val="p" />
                  </m:rPr>
                  <m:t>x</m:t>
                </m:r>
              </m:e>
            </m:d>
            <m:r>
              <m:rPr>
                <m:sty m:val="p" />
              </m:rPr>
              <m:t>×</m:t>
            </m:r>
            <m:r>
              <m:rPr>
                <m:sty m:val="p" />
              </m:rPr>
              <m:t>2</m:t>
            </m:r>
          </m:num>
          <m:den>
            <m:r>
              <m:rPr>
                <m:sty m:val="p" />
              </m:rPr>
              <m:t>3</m:t>
            </m:r>
            <m:r>
              <m:rPr>
                <m:sty m:val="p" />
              </m:rPr>
              <m:t>−</m:t>
            </m:r>
            <m:r>
              <m:rPr>
                <m:sty m:val="p" />
              </m:rPr>
              <m:t>x</m:t>
            </m:r>
          </m:den>
        </m:f>
      </m:e>
    </m:d>
  </m:oMath>
</m:oMathPara>

>>> native
[ ENumber "2"
, ESymbol Rel "="
, EDelimited
    "("
    ")"
    [ Right
        (EFraction
           NormalFrac
           (EGrouped
              [ EDelimited
                  "("
                  ")"
                  [ Right (ENumber "3")
                  , Right (ESymbol Bin "\8722")
                  , Right (EIdentifier "x")
                  ]
              , ESymbol Bin "\215"
              , ENumber "2"
              ])
           (EGrouped [ ENumber "3" , ESymbol Bin "\8722" , EIdentifier "x" ]))
    ]
]