12
32 = 3*3 = 9
3
Its easy
If 3x2 is 6, then just add three 7,8,9 The answer is 9!
19
The square root of 9 is 3, becasue 3 x 3 = 9
72 / \ 8*9 / \ / \ 4*2*3*3 /\ \ \ \ \ 2*2*2*3*3
-1/3 + (-3/8) = -8/24 - 9/24 = -17/24.
18
8 9 10
9.
29*1= 29 14.5*2=29 9 2/3 * 3 = 29.