a}3+1/2
b}3-1/2
c}3x1/2
d}4 1/2 x 2 1/3
e}1/2 - 2/5
f}1/2 x 2/5
g}7/5 + 3/4
h}7/5 - 3/4
i}7/5 x 3/4
j}1x5/8
k}0x5/8