Question

what should be subtracted from the sum of 7/8and 4/15 to get 9/40?​

Answer 1

let the no. to be subtracted be x

(7/8+4/15)- x= 9/40

lcm=120

=( 137/120 )- x = 9/40

=137/120-9/40=x

=lcm=120

=137-27÷120

=110÷120

=11/12 (answer)