Question

Write additive inverse of a) 21/18 b) -2/8​

Answer 1

a)
`-(21)/(18)`, b)
`(2)/(8)`.

Explanation:

Let be
`u` a real number, its additive inverse is a real number
`v` so that:

`u+v = 0`

That is,

`v = - u` (1)

Then, the additive inverses of
`(21)/(18)` and
`-(2)/(8)` are, respectively:

a)
`-(21)/(18)`, b)
`(2)/(8)`.