Răspuns :
fie x,x+1,x+2,x+3, nr necunoscute
avem ecuatia:x+x+1+x+2+x+3=50
4x+6=50
4x=50-6
4x=44
x=44:4
x=11
raspuns:11,12,13,14
avem ecuatia:x+x+1+x+2+x+3=50
4x+6=50
4x=50-6
4x=44
x=44:4
x=11
raspuns:11,12,13,14