Question

what should be multiplied with -3/14 so that the product may be5/12

Answer 1

Let the unknown number be x

-3/14*x=5/12
x=(5/12)/(-3/14)
x=5/14*12/-3
   =-70/36
   =-35/18

∴-15/7*-3/14 gives us 5/12

Answer 2

let the number be x.
then acc to ques
-3/14×x=5/12
x=5/12÷-3/14
x=-5×14/12×3
x=-70/36
x=-35/18