Question

what must be added to -3/4 to get 5/4 ?

Answer 1

Let the no. be x
 
-3/4 + x = 5/4
x = 5/4 + 3/4
x = 8/4
x= 2
2 must be added to -3/4 to get 5/4

Answer 2

let the added no. be x
according to question
-3/4 + x = 5/4
or, x = 5/4 + 3/4
or, x = 8/4
or, x = 2
hence, the added no. will be 2