What number should be subtracted from `3 1/2` to get `1 2/7 `

What number should be subtracted from 3/7 to get 5/4?

What number should be subtracted from -3/5 to get-2?

What number should be subtracted from (-5)/(7) to get -1?

(i) What number should be added to 5/12 to get 2""3/8 ? (ii) What number should be subtracted from 5 to get 1""5/13 ?

What number should be subtracted from (-5)/3 to get 5/6?

What number should be subtracted from (-5)/3 to get 5/6?

What should be subtracted from -2 to get -17 ?

What number should be subtracted from (-3)/(4) to get (2)/(3)

What number should be subtracted from (-3)/(4) to get (-1)/(2) ?

What should be subtracted from -5/4 to get -1 ?