Хелп плиз не могу решить...Дам 10 баллов.. Created by avbahsutova900. matematika-ru

Хелп плиз не могу решить...Дам 10 баллов....

July 2022 1 8 Report

Хелп плиз не могу решить...
Дам 10 баллов.

Answers & Comments

evvoronina1 1.
1/3 • (2 2/15 • 6 1/4 - 5 1/3 • 1 1/8) + 4 5/9 = 7
1) 2 2/15 • 6 1/4 = 32/15 • 25/4 = 40/3
2) 5 1/3 • 1 1/8 = 16/3 • 9/8 = 6
3) 40/3 - 6 = 40/3 - 18/3 = 22/3
4) 1/3 • 22/3 = 22/9 = 2 4/9
5) 2 4/9 + 4 5/9 = 6 + 9/9 = 6 + 1 = 7

2.
30 4/5 - 1 2/5 • (1 4/5 • (12 7/12 - 9 19/36) -
- 7/35 • 1 11/34) = 24
1) 12 7/12 - 9 19/36 = 12 21/36 - 9 19/36 =
= 3 2/36 = 3 1/18
2) 1 4/5 • 3 1/18 = 9/5 • 55/18 = 11/2 = 5 1/2
3) 17/35 • 1 11/34 = 17/35 • 45/34 = 9/14
4) 5 1/2 - 9/14 = 11/2 - 9/14 = 77/14 - 9/14 =
= 68/14 = 34/7
5) 1 2/5 • 34/7 = 7/5 • 34/7 = 34/5 = 6 4/5
6) 30 4/5 - 6 4/5 = 24

2 votes Thanks 1

avbahsutova900 Спасибо огромное

avbahsutova900 Это верно?

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