<<< native [ EArray [ AlignCenter ] [ [ [ EGrouped [ EGrouped [ EGrouped [ ENumber "8.44" , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , EGrouped [ ENumber "55" , ESymbol Ord "\8290" , EIdentifier "y" ] ] , ESymbol Rel "=" , ENumber "0" ] ] ] , [ [ EGrouped [ EGrouped [ EGrouped [ ENumber "3.1" , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "-" , EGrouped [ ENumber "0.7" , ESymbol Ord "\8290" , EIdentifier "y" ] ] , ESymbol Rel "=" , EGrouped [ ESymbol Bin "-" , ENumber "1.1" ] ] ] ] ] ] >>> mml $$\begin{array}{c}\hfill 8.44x+55y=0\hfill \\ \hfill 3.1x-0.7y=-1.1\hfill \end{array}$$