Question

5/7 * 4/9 * 5 =

5 * 3/13 * 4/6=

3/10 * 15/4 * 1/2=

1/4 * 7/8 * 13/5 =

Answer 1

5/7 * 4/9 * 5 =100/63=1 i 37/63

5 * 3/13 * 4/6=60/78=10/13

3/10 * 15/4 * 1/2=45/80=9/16

1/4 * 7/8 * 13/5 =91/160