Multiply simple pairs of proper fractions, writing the answer in its simplest form [for example, 1/4 x 1/2 = 1/8]

1. Fractured multiplication: Fraction multiplication
2. Fractions multiply: Multiplying fractions
3. Fractions Multiply: 3/4x2/9
4. Fractions Multiply: 4/7x21/32
5. Fractions Multiply: 3/5x20/33