B. Add or subtract the following. Choose your answer below.

_______6. 3/8 + 1/8 = n
_______7. 2/3 + 1/9= n
_______8. 5 1/5 + 2 1/5 = n
_______9. 4 1/2 + 2 2/3 = n
_______10. 5/6 - 1/6 = n
_______11. 1/2 - 1/4 = n
_______12. 5 - 2/5 = n
_______13. 5 1/6 - 3 5/6 = n
_______14. 6 5/8 - 3 1/2 = n
_______15.7 3/10 - 4/10 = n


a. 2/3
b. 1/4
c. 1/2
d. 1 1/3
e. 7 1/6
f. 3 1/8
g. 7/9
h. 4 3/5
i. 6 9/10
j. 7 2/5​