Question

3 Вычисли. 13/25 +2/25. +3/25 19/34 -6/36 +3/34 7/90 55/90 +1/90 23//40 +5/40 +1/40 63/80. +. 15/80. - 9/80. (20/145+. 18/145) +29/145 ​ помогите пожалуйста

Answer 1

Ответ:

Пошаговое объяснение:

13/25 + 2/25 + 3/25 =

(13+2+3)/25 = 18/25

19/34 - 6/36 + 3/34 =

19/34 - 1/6 + 3/34 =

57/102 - 17/102 + 9/102 =

(57-17+9)/102 = 49/102

7/90 + 55/90 + 1/90 =

(7+55+1)/90 = 63/90 = 7/10

23/40 + 5/40 + 1/40 =

(23+5+1)/40 = 29/40

63/80 + 15/80 - 9/80 =

(63+15-9)/80 = 69/80

20/145 + 18/145 + 29/145 = (20+18+29)/145 = 67/145

Answer 2

13/25 + 2/25 = (13 + 2)/25 = 15/25 = 3/5

3/25 + 19/34 = (3*34 + 19*25)/(25*34) = (102 + 475)/(850) = 577/850

-6/36 = -1/6

3/34 + 7/90 + 55/90 = (3*90 + 7*34 + 55*34)/(34*90) = (270 + 238 + 1870)/(3060) = 2378/3060

1/90 + 23/40 = (1*40 + 23*90)/(90*40) = (40 + 2070)/(3600) = 2110/3600 = 53/90

5/40 = 1/8

1/40 + 63/80 = (1*80 + 63*40)/(40*80) = (80 + 2520)/(3200) = 2600/3200 = 13/16

15/80 = 3/16

9/80 = 9/80

(20/145 + 18/145) = (20 + 18)/145 = 38/145

29/145 = 29/145

Therefore, the final answer is: 3/5, 577/850, -1/6, 2378/3060, 53/90, 1/8, 13/16, 3/16, 9/80, 38/145, 29/145.