9 + 8 =

2x 17

29 + 33 =

9 x 8 = 72

164 : 2 =

Half of 20 =

6 x 3 =

39 - 20 =

54 + 37 =

9+8=17 | 2*17=34 | 29+33=62 | 164:2=82| 20:2=10 | 6*3=18 | 39-20=19 | 54+37 = 91|

Step-by-step explanation:

9+8 is 17 since 9+9 is 18 so you just remove a number to make it 17 which is the same thing that happened to the nine that turned into an 8.

17*2 is 34 b/c 17+17 is 34. details to follow.

1. 17

2. 34

3. 62

5. 82

6. 10

7. 18

8. 19

9. 91