Question

(3 4/5-2 3/10):1 1/2.

Answer 1

         ........................=1

1)   3 4/5 - 2 3/10=3 8/10 - 2 3/10=1 5/10=1 1/2
2)   1 1/2 : 1 1/2=3/2 * 2/3=1