Răspuns :
x+y+z=286
x+y=226
z=y:3
226+z=286
z=286-226
z=60
z=y:3
y=3xc
y=3x60
y=180
x=286-240
x=46
a+b+c=286
a+b=226
c<b de 3 ori => b=3c
a=?
226+c=286
c=286-226 => c=60
b=60*3 => b=180 => b+c=180+60 => b+c=240
a+240=286
a=286-240 => a=46
46+180+60=286