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Анна12061
@Анна12061
April 2021
1
4
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Найдите сумму:
9ц 8/21+4ц 11/14
8ц 5/9+7ц 3/4+12ц 7/12
Расписанно,плиз)
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prettypushkova
Verified answer
9 8/21 + 4 11/14 - общий знаменатель 42
= 9 16/42 + 4 33/42 = 13 49/42 = 14 7/42 = 14 целых 1/6
- - - - - - - - - - - - - - - - - - - - - -
7/42 = 1/6 - сократили на 7.
8 5/9 + 7 3/4 + 12 7/12 - общий знаменатель 36
= 8 20/36 + 7 27/36 + 12 21/36 = 27 68/36 = 28 32/36 = 28 целых 8/9
- - - - - - - - - - - - - - - - - - - - - - -
32/36 = 8/9 - сократили на 4.
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Answers & Comments
Verified answer
9 8/21 + 4 11/14 - общий знаменатель 42= 9 16/42 + 4 33/42 = 13 49/42 = 14 7/42 = 14 целых 1/6
- - - - - - - - - - - - - - - - - - - - - -
7/42 = 1/6 - сократили на 7.
8 5/9 + 7 3/4 + 12 7/12 - общий знаменатель 36
= 8 20/36 + 7 27/36 + 12 21/36 = 27 68/36 = 28 32/36 = 28 целых 8/9
- - - - - - - - - - - - - - - - - - - - - - -
32/36 = 8/9 - сократили на 4.