8x (a)   =72

(a)   x9=27

10x (a)   =100

(a)   x4=16

9x (a)   =18

(a)   x8=16

3x (a)   =15

(a)   x5=20

(a)   x8=40

6x (a)   =60

6x (a)   =30

(a)   x2=14

(a)   x8=32

2x (a)   =10

(a)   x2=6

6x (a)   =54

7x (a)   =28

9x (a)   =45

(a)   x3=15