Problema 5!DAU COROANA CELOR CARE RASPUND CAT MAI REPEDE

|__|__| a
|__|__|__|__|__|__|__| b } 180
2s + 7s = 180
9s = 180
1s = 180 : 9
1s = 20
a = 2s = 2·20 = 40
b = 7s = 7·20 = 140