Пропорции:
1) 9/3 = 4.8/x (x = 1.6)2) 4.8/1.2 = x/3 (x = 12)3) 3/12 = 7/x (x = 28)4) 7/45 = x/9 (x = 1.4)
Пропорции:
1) 9/3 = 4.8/x (x = 1.6)
2) 4.8/1.2 = x/3 (x = 12)
3) 3/12 = 7/x (x = 28)
4) 7/45 = x/9 (x = 1.4)