a]
x + 3 i 3/4 = 6
x = 6 - 3 i 3/4
x = 2 i 1/4
b]
x - 1 i 1/7 = 5/7
x = 5/7 + 1 i 1/7
x = 1 i 6/7
c]
7 i 3/4 - x = 2 i 1/4
x = 7 i 3/4 - 2 i 1/4
x = 5 i 2/4
x = 5 i 1/2
