Question

find using suitable property 2/3 X 5/7 + 1/2 + 5/7 X -1/3

Answer 1

Hey dear
=10/21+1/2×-5/21
=20/42+21/42-10/42
=41/42-10/42
=31/42

hope it helps u
hope you understand

Answer 2

10/21+1/2+-5/21
5/21+1/2
10+21/42
31/42