Răspuns :
160 : a = b
b : c = 20
160 : c = 80
c = 160 : 80
c = 2
b : 2 = 20
b = 20 * 2
b = 40
160 : a = 40
a = 160 : 40
a = 4
b : c = 20
160 : c = 80
c = 160 : 80
c = 2
b : 2 = 20
b = 20 * 2
b = 40
160 : a = 40
a = 160 : 40
a = 4