a = clopotei
b = globulete
c = stelute
a+b+c = 28560
a+b = 16990
b+c = 21210
a = ? , b = ? , c = ?
16990 + c = 28560
c = 28560 - 16990
c = 11570
b+c = 21210
b + 11570 = 21210
b = 21210 - 11570
b = 9640
a + b = 16990
a + 9640 = 16990
a = 16990 - 9640
a = 7350
vericicare : a+b+c = 28560
7350 + 9640 + 11570 = 28560
7350 + 9640 = 16990
9640 + 11570 = 21210