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Клевая401
@Клевая401
July 2022
1
9
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2/5 + 2 4/9 : ((7 5/12 - 5 3/4) : 22 1/2 +10 х 5/18) = 16/35
нужно решить по действиям
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Galinka23
Verified answer
1) 7 5/12 - 5 3/4 = 89/12 - 23/4 = (89 × 1 - 23 × 3)/12 = 89/12 - 69/12 = 20/12 = 5/3 = 1 2/3
2) 1 2/3 : 22 1/2 = 5/3 : 45/2 = 5/3 * 2/45 = 10/135= 2/27
3) 10 * 5/18 =10/1*5/18=50/18= 25/9 = 2 7/9
4) 2/27 + 2 7/9 = 2/27 + 25/9 = (2 × 1 + 25 × 3)/27 = 2/27 + 75/27 = 77/27 = 2 23/27
5) 2 4/9 : 2 23/27 = 22/9 : 77/27 = 22/9 * 27/77 =594/693= 6/7
6)2/5 + 6/7 =(2 × 7 + 6 × 5)/35 = 14/35 + 30/35 = 44/35 = 1 9/35
только ответ в примере равен 1 9/35
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Answers & Comments
Verified answer
1) 7 5/12 - 5 3/4 = 89/12 - 23/4 = (89 × 1 - 23 × 3)/12 = 89/12 - 69/12 = 20/12 = 5/3 = 1 2/32) 1 2/3 : 22 1/2 = 5/3 : 45/2 = 5/3 * 2/45 = 10/135= 2/27
3) 10 * 5/18 =10/1*5/18=50/18= 25/9 = 2 7/9
4) 2/27 + 2 7/9 = 2/27 + 25/9 = (2 × 1 + 25 × 3)/27 = 2/27 + 75/27 = 77/27 = 2 23/27
5) 2 4/9 : 2 23/27 = 22/9 : 77/27 = 22/9 * 27/77 =594/693= 6/7
6)2/5 + 6/7 =(2 × 7 + 6 × 5)/35 = 14/35 + 30/35 = 44/35 = 1 9/35
только ответ в примере равен 1 9/35