Răspuns :
I+II+III=338
I+II=251
II+III=219
Cati lei are al treilea elev?
338-251=87
Cati lei are primul elev?
338-219=119
Cati lei are al doilea elev?
251-119=132
VERIFICARE 132+119+87=338
I+II+III=338
I+II=251
II+III=219
Cati lei are al treilea elev?
338-251=87
Cati lei are primul elev?
338-219=119
Cati lei are al doilea elev?
251-119=132
VERIFICARE 132+119+87=338