Răspuns:
a+b+c= 52 nuci |___| a
b=a+4 |___|____| b=a+4
c=b+8 = a+4+8= a+12 |___|____|________| c= b+8
se inlocuieste b si c in functie de a
a+a+4+ a+12= 52
3a= 52 - 4 -12
3a= 40-4=36
3a=36 a= 36 : 3= 12 a= 12 nuci
b= a+4= 12+4=16 b=16 nuci
c=b+8=16+8=24 c=24 nuci
verificare 12+ 16 + 24= 28+24= 52 nuci