Verified answer

Ответ:

1) 10 + 12 = 24

24 - 12 = 10

2) 31 - 17 = 14

14 + 17 = 31

3) 28 + 15 = 43

43 - 28 = 15

4) 62 - 45 = 17

62 - 17 = 45  

5) 74 - 31 = 43

31 + 43 = 74

6) 32 + 35 = 67

67 - 35 = 32

7)  20 + 39 = 59

59 - 20 = 39

8) 89 - 46 = 43

43 + 46 = 89

9) 94 - 23 = 71

94 - 71 = 23

10)  35 + 55 = 90

90 - 55 = 35