Răspuns :
FIE X,4X NR NECUNOSCUTE
AVEM ECUATIA:4X+X=125
5X=125
X=125:5
X=25
4X=25X4=100
RASPUNS:25,100
VERIFICARE:100+25=125
AVEM ECUATIA:4X+X=125
5X=125
X=125:5
X=25
4X=25X4=100
RASPUNS:25,100
VERIFICARE:100+25=125