Answer:
39/4 -32/9
Find common denominators
351/32-128/32
Subtract
223/32
Change to mixed number
223 ÷ 32 = 6 and remainder = 31 =>
223 = 6 × 32 + 31 =>
223/32 =
(6 × 32 + 31) / 32 =
6 + 31/32 =
6 31/32
