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""left lbrace { stack { alignr ax+by={} #alignr cx+dy={}} stack { alignl e~~~~%DELTA sub x:`nitalic {determinante de x}~~~~%DELTA sub s:` nitalic {determinante`del``sistema} # alignl f`~~~%DELTA sub y:`nitalic {determinante de y}}} right none newline newline
""%DELTA sub s=`left lline matrix{a#b##c#d} right rline=`ad - cb=`k sub 1~~~~%DELTA sub x=`left lline matrix{e#b##f#d} right rline=`ed - fb=`k sub 2~~~~%DELTA sub y=`left lline matrix{a#e##c#f} right rline=`af - ce=`k sub 3 newline newline ""x=`{%DELTA sub x} over {%DELTA sub s}=`{k sub 2} over {k sub 1}~~~~~~y=`{%DELTA sub y} over {%DELTA sub s}=`{k sub 3} over {k sub 1}~~~nitalic{y`esta`es`la`solución`del`sistema.}