a = total fete
b = total baieti
T (total elevi)= ?
[tex]\left \{ {{a+2=2(b-6)} \atop {b+4=2(a-8)}} \right.[/tex]
[tex]\left \{ {{a+2=2b-12} \atop {b+4=2a-16}} \right.[/tex]
[tex]\left \{ {{a=2b-14} \atop {b=4b-48}} \right.[/tex]
[tex]{{\left \{ {{a=2b-14} \atop {3b=48}} \right.} \right.[/tex]
[tex]\left \{ {{b=16} \atop {a=32-14}} \right. \\[/tex]
[tex]\left \{ {{a=18} \atop {b=16}} \right.[/tex]
T = 34