Răspuns :
a+a+2+a+4=70+a
3a-a=70-6
2a=64
a=64:2=32
nr sunt 32,34,36
proba 32+34+36=70+32=102
3a-a=70-6
2a=64
a=64:2=32
nr sunt 32,34,36
proba 32+34+36=70+32=102