Failure to display the formula correctly

[saraOrkide]

ex mml code :

`

$\left(4\right) \left\{\begin{array}{cc}AB=A\text{'}B\text{'}=c& \\ AC=A\text{'}C\text{'}=b& \\ BC=B\text{'}C\text{'}=a& \\ & \end{array}\right. \stackrel{\text{ض ض ض}}{\to }\stackrel{\text{Δ}}{ABC} \cong \stackrel{\text{Δ}}{A\text{'}B\text{'}C\text{'}} \Rightarrow \begin{array}{l}\begin{array}{ll}& \widehat{B}=\widehat{B\text{'}}\\ & \widehat{C}=\widehat{C\text{'}}\\ & \widehat{A}=\widehat{A\text{'}}=90^{\circ }\Rightarrow \widehat{A}=90^{\circ }\\ & \end{array}\\ \end{array}$

`

The bracket placed for the number 4 is too big using version of mathjax 2.7.9

[dpvc]

This is the correct rendering of the MathML you have given. It is also a duplicate of your #3141, which reports the same "issue". The solution there is the solution here as well: use an <mrow> around the <mo>(</mo> <mn>4</mn> <mo>)</mo>, as recommended by the MathML specification.

[saraOrkide]

Oh, I'm so sorry, I wasn't paying attention to mrow at all Thank you very much