Question

6.
1
68
61
2
m21 =
3
m22=
m23 -

Answer 1

1 = 51

2= 61

3= 29

Explanation:

1) 61+68= 129

180-129= 51

2) 61 is across it so they have the same number

3) 61 +90= 151

180-151= 29