24-17=

(a)  

35+27=

(a)  

28+37=

(a)  

35-8=

(a)  

12+29=

(a)  

44-29=

(a)  

14+27=

(a)  

92-46=

(a)  

39+15=

(a)  

71+19=

(a)  

87-38=

(a)