5. 3+67 bigcirc 67+3 34- (18-9) bigcirc 34- 9 9+28 bigcirc 9+26 75- (14-6) bigcirc 75-

1. 3 + 67 = 70

   67 + 3 = 70

   70 = 70

   3 + 67 = 67 + 3

2. 34 - (18 - 9) = 34 - 9 = 34 - 9 = 25

   34 - 9 = 25

   34 - (18 - 9) = 34 - 9

3. 9 + 28 = 37

   9 + 26 = 35

   37 > 35

   9 + 28 > 9 + 26

4. 75 - (14 - 6) = 75 - 8 = 67

   75 - = 75 - =

   75 - (14 - 6) < 75 -

Ответ: 3 + 67 = 67 + 3, 34 - (18 - 9) = 34 - 9, 9 + 28 > 9 + 26, 75 - (14 - 6) < 75 -