(     )+0=13

(     )+14=15

(     )+15=16

(     )+11=14

(     )+3=14

(     )+2=14

(     )+4=16

(     )+1=16

(     )+4=20

(     )+1=18

(     )+18=20

(     )+6=18

(     )+8=15

(     )+12=17

(     )+10=10

(     )+4=12

(     )+11=16

(     )+5=13

(     )+10=18

(     )+10=13

(     )+0=11

(     )+0=19

(     )+14=18

(     )+16=16

(     )+2=16

(     )+10=12

(     )+0=19

(     )+9=17

(     )+12=12

(     )+3=16

(     )+11=16

(     )+12=12

(     )+2=20

(     )+16=18

(     )+0=19

(     )+3=19

(     )+9=18

(     )+9=18

(     )+1=20

(     )+0=12

(     )+15=17

(     )+0=19

(     )+3=19

(     )+1=19

(     )+2=18

(     )+10=12

(     )+1=19

(     )+3=19

(     )+10=20

(     )+7=19