Question

2 wholes and 3/4 + 3/? = 2 wholes and 5/8

Answer 1

let's write it first:

2+
`(3)/(4)`+
`(3)/(x)`=2
`(5)/(8)`

let's substract 2 from both sides


`(3)/(4)`+
`(3)/(x)`=
`(5)/(8)`

and let's substract
`(3)/(4)` from both sides too


`(3)/(x)`=
`(5)/(8)`-
`(3)/(4)`

this is


`(3)/(x)`=
`(5)/(8)`-
`(6)/(8)`

`(3)/(x)`=
`(-1)/(8)`

let's multiply by x:
3=
`(-1x)/(8)`

and by8:
24=-x
x=24
that means that the question mark is -24!!!!