Question

what should be subtracted from 7 /8 so as to get 5 /12

Answer 1

Let x be subtracted.

7/8-x=5/12

=7-8x/8=5/12

=7-8x=40/12

-8x=10/3-7

=-8x=-11/3

=x=11/(8*3)

=x=11/24

Answer 2

Let a be subtracted.

7/8-a=5/12

=7-8a/8=5/12

=7-8a=40/12

-8a=10/3-7

=-8a=-11/3

=a=11/(8*3)

=a=11/24