Question

5/7×（12/25-1/5）+4/15 5／8×60／13＋5／13÷8／5

Answer 1

5/7×（12/25-1/5）+4/15

=5/7×（12/25-5/25）+4/15

=5/7×(7/25)+4/15

=1/5+4/15

=3/15+4/15

=7/15

5/8×(60/13)＋5/13÷8/5

=5/8×(60/13)＋5/13×(5/8)

=5/8×(60/13＋5/13)

=5/8×(65/13)

=5/8×5

=25/8