(     )-21=5

(     )-10=12

(     )-23=0

(     )-18=7

(     )-11=17

(     )-2=30

(     )-9=40

(     )-13=30

(     )-26=18

(     )-14=7

(     )-41=5

(     )-14=25

(     )-13=32

(     )-30=15

(     )-4=37

(     )-39=11

(     )-22=17

(     )-11=24

(     )-47=1

(     )-32=11

(     )-11=21

(     )-20=7

(     )-33=14

(     )-19=6

(     )-26=9

(     )-41=8

(     )-44=5

(     )-3=40

(     )-37=7

(     )-21=1

(     )-10=18

(     )-15=14

(     )-29=20

(     )-2=23

(     )-44=5

(     )-38=9

(     )-25=12

(     )-23=27

(     )-27=9

(     )-5=39

(     )-27=1

(     )-2=47

(     )-11=21

(     )-12=30

(     )-2=34

(     )-41=5

(     )-13=12

(     )-5=16

(     )-12=17

(     )-18=10