Ответ:
А = (3,4 + 1 1/7) • 11 2/3. / 1 2/9 - 1 1/18
А =45 1/106
1) 3,4 + 1 1/7 = 3 4/10 + 1 1/7 = 3 28/70 + 1 10/70 = 4 38/70 = 4 19/35
2) 4 19/35 • 11 2/3 = 159/35 • 35/3 = 53
3) 1 2/9 - 1 1/18 = 1 4/18 - 1 1/18 = 1 3/18 = 1 1/6
4) 53 / 1 1/6 = 53/1 • 6/7 = 318/7 = 45 1/106
В = (8,75 - 2 1/8) • 16. / (5,15 - 4,25) • 1 1/9
В = 106
1) 8,75 - 2 1/8 = 8 3/4 - 2 1/8 = 8 6/8 - 2 1/8 = 6 5/8
2) 6 5/8 • 16 = 53/8 • 16/1 = 53/1 • 2/1 = 106
3) 5,15 - 4,25 = 0,90
4) 0,9 • 1 1/9 = 9/10 • 10/9 = 1
5) 106 : 1 = 106
Решение:
А = 45 1/106
45 1/106 = 100%
106 = 100%
А - В = с - разница
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Answers & Comments
Ответ:
А = (3,4 + 1 1/7) • 11 2/3. / 1 2/9 - 1 1/18
А =45 1/106
1) 3,4 + 1 1/7 = 3 4/10 + 1 1/7 = 3 28/70 + 1 10/70 = 4 38/70 = 4 19/35
2) 4 19/35 • 11 2/3 = 159/35 • 35/3 = 53
3) 1 2/9 - 1 1/18 = 1 4/18 - 1 1/18 = 1 3/18 = 1 1/6
4) 53 / 1 1/6 = 53/1 • 6/7 = 318/7 = 45 1/106
В = (8,75 - 2 1/8) • 16. / (5,15 - 4,25) • 1 1/9
В = 106
1) 8,75 - 2 1/8 = 8 3/4 - 2 1/8 = 8 6/8 - 2 1/8 = 6 5/8
2) 6 5/8 • 16 = 53/8 • 16/1 = 53/1 • 2/1 = 106
3) 5,15 - 4,25 = 0,90
4) 0,9 • 1 1/9 = 9/10 • 10/9 = 1
5) 106 : 1 = 106
Ответ:
Решение:
А = 45 1/106
45 1/106 = 100%
В = 106
106 = 100%
А - В = с - разница