(9 - 2 1/7 : 9/14) : 2 4/15 = 2 1/2
1) 2 1/7 : 9/14 = 15/7 · 14/9 = (5·2)/(1·3) = 10/3 = 3 1/3
2) 9 - 3 1/3 = 8 3/3 - 3 1/3 = 5 2/3
3) 5 2/3 : 2 4/15 = 17/3 : 34/15 = 17/3 · 15/34 = (1·5)/(1·2) = 5/2 = 2 1/2
Ответ: 2 целых 1/2 (или 2,5 в десятичных дробях).
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
(9 - 2 1/7 : 9/14) : 2 4/15 = 2 1/2
1) 2 1/7 : 9/14 = 15/7 · 14/9 = (5·2)/(1·3) = 10/3 = 3 1/3
2) 9 - 3 1/3 = 8 3/3 - 3 1/3 = 5 2/3
3) 5 2/3 : 2 4/15 = 17/3 : 34/15 = 17/3 · 15/34 = (1·5)/(1·2) = 5/2 = 2 1/2
Ответ: 2 целых 1/2 (или 2,5 в десятичных дробях).
Verified answer