Compute Each Sum or Difference
A.2/3 + 1/5
B.7/8 - 1/4
C1 2/3 + 3 1/4
D7 - 3 2/5
A.2/3 + 1/5
B.7/8 - 1/4
C1 2/3 + 3 1/4
D7 - 3 2/5