9 + 15 - 6 =

(a)  

24 $$\div$$   6 $$+$$   7 =

(a)  

65 $$-$$  21 $$\div$$  3 $$=$$  

(a)  

58 $$+$$   (a)   $$=$$  51

$$78-15-9=$$  

(a)  

$$7\times6-16=$$  

(a)  

$$36\div6\times2=$$  

(a)