Răspuns :
a+b+c=93
a-6=b+6=c, => a=c+6 iar b=c-6
(c+6) + (c-6) + c=93
3c=93
c=31 mere in cosul al 3-lea
b=c-6=31-6
c=25 mere in cosul al 2-lea
a=c+6=31+6
a=37 mere in primul cos
verificare: 37+25+31=93 mere
37-6=25+6=31 (A)
a+b+c=93
a-6=b+6=c, => a=c+6 iar b=c-6
(c+6) + (c-6) + c=93
3c=93
c=31 mere in cosul al 3-lea
b=c-6=31-6
c=25 mere in cosul al 2-lea
a=c+6=31+6
a=37 mere in primul cos
verificare: 37+25+31=93 mere
37-6=25+6=31 (A)