Question

помогите пожалуйста решить​

Answer 1

Ответ:

11) 7/12 - 2/15 = 35/60 - 8/60 = 27/60 = 9/20

12) 9/14 + 2/21 = 27/42 + 4/42 = 31/42

13) 7/10 - 2/15 = 21/30 - 4/30 = 17/30

14) 2/9 + 4/15 = 10/45 + 12/45 = 22/45

15) 13/18 - 3/8 = 52/72 - 27/72 = 25/72

16) 3/20 + 6/25 = 15/100 + 24/100 = 39/100

17) 19/24 - 4/15 = 95\120 + 32/120 = 127/120 = 1 7/120

18) 1/12 + 7/30 = 5/60 + 14/60 = 19/60

19) 7/10 - 1/15 = 21/30 - 2/30 = 19/30

20) 7/10 + 3/25 = 35/50 + 6/50 = 41/50

21) 35/36 - 5/8 = 70/72 - 45/72 = 25/72

22) 5/12 + 14/15 = 25/60 + 56/60 = 81/60 = 1 21/60

23) 7/8 - 5/6 = 21/24 - 20/24 = 1/24

24) 3/24 + 5/36 = 9/72 + 10/72 = 19/72

25) 7/12 - 3/8 = 14/24 - 9/24 = 5/24

26) 4/9 + 5/6 = 8/18 + 15/18 = 23/18 = 1 5/18

27) 5\6 - 2/9 = 15/18 - 4/18 = 11/18

28) 7/12 + 9/20 = 35/60 + 27/60 = 62/60 = 1 2/60

29) 9/14 - 2/21 = 27/42 + 4/42 = 31/42

30) 9/35 + 11/28 = 36/140 + 55/140 = 91/140

31) 5/9 - 1/12 = 20/36 - 3/36 = 17/36

32) 11/32 + 13/48 = 33/96 + 26/96

33) 4/15 - 2/9 = 12/45 - 10/45 = 22/45

34) 19/24 + 7/18 = 57/72 + 28/72 = 85/72 = 1 13/72

35) 6/25 - 3/20 = 15/100 + 24/100 = 39/100

36) 5/8 + 11/12 = 15/24 + 22/24 = 37/24 = 1 13/24

37) 11/30 - 1/12 = 22/60 - 5/60 = 17/60

38) 13/30 + 1/9 = 39/90 + 10/90 = 49/90

39) 5/24 - 7/36 = 15/72 - 14/72 = 1/72

40) 11/70 + 13/42 = 33/210 + 65/210 = 98/210