Jane is making a suit which requires 2 5/8 yards for the jacket and 1 3/4 yards for the skirt. what is the total amount of material she needs?
a. 4 3/8 yards
b. 3 1/2 yards
c. 3 2/3 yards
d. 4 yards

The answer is A. 4 3/8 yards. The total amount of material is the sum of material required for the jacket and material required for the skirt. Material for the jacket: 2 5/8 = 2 + 5/8 = 16/8 + 5/8 =(16+5)/8 = 21/8. Material for the skirt: 1 3/4 =1 + 3/4 = 4/4 + 3/4 = (4+3)/4 = 7/4. Thus 21/8 + 7/4 = 21/8 + 14/8 = 35/8 = (32+3)/8 = 32/8 + 3/8 = 4 + 3/8 = 4 3/8.

(x) - (y) = (1 + 4i)

(3 + 6i) - (2 + 2i) = (1 + 4i)