Question

7/15:(6/10-8/3)+19*2/31

Answer 1

6/10-8/3=18/30-80/30=-62/30

7/15:(-62/30)=7/15*(-30/62)=-14/62=-7/31

19*2/31=38/31

-7/31+38/31=31/31=1

Answer 2

7/15:(-31/15)+19*38/31
-7/15*15/31+38/31
-7*1/31+38/31
-7/31+38/31=1