1) 2,8/5,6=x/4 2) 3 3/7:x=5 5/7:5
2,8/5,6 = x/4 3 3/7 : x = 5 5/7 : 5 1/2 = x/4 24/7 : x = 40/7 : 5 x = 1/2 * 4 24/7 : x = 8/7 x = 2 x = 24/7 *7/8 x = 3 Ответ: {2} Ответ:{3}