r,a,v=?
r+a=126
a+v=95
r+v=143
r+a+a+v+r+v=126+95+143
2r+2a+2v=364
2(r+a+v)=364
r+a+v=364:2
r+a+v=182
r+95=182 => r=182-95 => r=87
87+v=143 => v=143-87 => v=56
a+56=95 => a=95-56 => a=39
Solutia: r=87 (beculete rosii)
a=39 (beculete albastre)
v=56 (beculete verzi)
Total beculete: 87+39+56=182