№80
1)5 1/3:8/9:1/3=18
1)5 1/3:8/9=16/3:8/9=16/3*9/8=2/3*9/1=2/1*3/1=6
2)6:1/3=6*3/1=18
2)5 1/3:(8/9:1/3)=2
1)8/9:1/3=8/9*3/1=8/3*1/1=2 2/3
2)5 1/3:2 2/3=16/3:8/3=16/3*3/8=16/1*1/8=2/1*1/1=2
ответ: 3/1
5 1/3 : 8/9 : 1/3
1) 5 1/3 : 8/9 = 5 1/3 * 9/8 = 16/3 * 9/8 = 16 * 9 / 3 * 8 = 8 * 2 * 9 / 3 * 8 = 2 * 9 / 3 = 18/3 = 6
2) 6 : 1/3 = 6 * 3/1 = 6/6 * 3/1 = 6 * 3 / 6 * 1 = 3/1
№80
1)5 1/3:8/9:1/3=18
1)5 1/3:8/9=16/3:8/9=16/3*9/8=2/3*9/1=2/1*3/1=6
2)6:1/3=6*3/1=18
2)5 1/3:(8/9:1/3)=2
1)8/9:1/3=8/9*3/1=8/3*1/1=2 2/3
2)5 1/3:2 2/3=16/3:8/3=16/3*3/8=16/1*1/8=2/1*1/1=2
ответ: 3/1
5 1/3 : 8/9 : 1/3
1) 5 1/3 : 8/9 = 5 1/3 * 9/8 = 16/3 * 9/8 = 16 * 9 / 3 * 8 = 8 * 2 * 9 / 3 * 8 = 2 * 9 / 3 = 18/3 = 6
2) 6 : 1/3 = 6 * 3/1 = 6/6 * 3/1 = 6 * 3 / 6 * 1 = 3/1