Question

- 5/7 * 3/8 * 1 2/5 * ( - 2/3 ):                        - 5 * ( - 1 , 2 ) * ( - 7 );

Answer 1

-5/7*12/5=-12/7
3/8*(-12/7)=-9/14
-9/14* -2/3=3/7
-5*(-1,2)=6
6* -7=-42
3/7:-42=3*-6=-18
Ответ =18