Răspuns :
a+b+c=360
a+b=220
b+c=260
b=260-220
b=40
a+40=220
a=220-40
a=80
40+c=260
c=260-40
c=220
a+b=220
b+c=260
b=260-220
b=40
a+40=220
a=220-40
a=80
40+c=260
c=260-40
c=220
a+b+c=360
a+b=220
b+c=260
a+b+c=360
220+c=360
c=360-220
c=140
b+c=260
b+140=260
b=260-140
b=120
a+b=220
a+120=220
a=220-120
a=100
a+b=220
b+c=260
a+b+c=360
220+c=360
c=360-220
c=140
b+c=260
b+140=260
b=260-140
b=120
a+b=220
a+120=220
a=220-120
a=100