The user wants me to extract all mathematical expressions from the image and format them as a JSON array.

Математические выражения:

90: 5 =

18 x 5 =

4 x 28 =

54: 3 =

74 x 3 =

96: 8 =

34 x 5 =

78: 6 =

6 x 66 =

75: 5 =

53 x 1 =

72: 6 =

17 x 6 =

62 x 3 =

22: 2 =

7 x 29 =

19 x 2 =

84: 7 =

64: 4 =

37 x 9 =

7 x 52 =

19 x 7 =

68: 4 =

60: 5 =

98: 7 =

35 x 4 =

9 x 46 =

55: 5 =

81 x 1 =

19 x 3 =

90: 6 =

38 x 7 =

80: 5 =

99: 9 =

25 x 9 =

8 x 39 =

13: 1 =

15 x 2 =

57: 3 =

68 x 2 =

5 x 28 =

76: 4 =

16 x 8 =

48: 3 =

85: 5 =

57: 3 =

9 x 46 =

19 x 5 =