l______l__l-7
l____+2l
l______l___l-10 }342
Egalam gramezile: 342-7+2-10=335+2-10=337-10=327
Nr. pepeni din fiecare gramada egalata: 327:3=109
In prima gramada: 109+7=116 pepeni
In a doua: 109-2=107 pepeni
In a treia gramada: 109+10=119 pepeni
R. 116 pepeni; 107 pepeni; 119 pepeni