Question

номер:737н,740(1,3),743(1)​P.S кто напишет отмечу ответ лучший

Answer 1

Ответ:

Пошаговое объяснение:

а) 0,8 + 3/7 = 4/5 + 3/7 = 28/35 + 15/35 = 43/35 = 1, 8/35

б) 3, 1/3 - 2,5 = 3, 1/3 - 2, 1/2 = 3, 2/6 - 2, 3/6 = 5/6

в) 4,9 + 1 1/9 = 4, 9/10 + 1, 1/9 = 4, 81/90 + 1,10/90 = 5, 91/90 = 6, 1/90

г) 26, 1/11 - 5,7 = 26, 1/11 - 5, 7/10 = 26, 10/110 - 5, 77/110 = 20, 43/110

д) 40,8 + 15, 2/3 = 40, 4/5 + 15, 2/3 = 40, 12/15 + 15, 10/15 = 55, 22/15 = 56, 7/15

e) 18, 5/13 - 9,5 = 18, 5/13 - 9, 1/2 = 18, 10/26 - 9, 13/26 = 8, 23/26

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1)

x + 8, 1/11 = 16,1

x + 8, 1/11 = 16, 1/10

x = 16, 1/10 - 8, 1/11

x = 16, 11/110 - 8, 10/110

x = 8, 1/110

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3)

43, 2/9 - x = 26,5

x = 43, 2/9 - 26,5

x = 43, 2/9 - 26, 1/2

x = 43, 4/18 - 26, 9/18

x = 16, 13/18

===========================

2,8x = 9, 1/3

x = 9, 1/3 : 2,8

x = 9, 1/3 : 2, 4/5

x = 28/3 : 14/5

x = 28/3 * 5/14

x = 10/3

x = 3, 1/3

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