Question

Evaluate xyz if x = 4/-7, y = 3/4, and z = 5/-8. Write in simplest form

1/2
1/-2
5 1/4
-5 1/4

Answer 1

`(15)/(56)`

Explanation:

We want to evaluate

`xyz`

if

`x = - (4)/(7)`

`y = (3)/(4)`

`z = - (5)/(8)`

We substitute these values to get:

`- (4)/(7) * (3)/(4) * - (5)/(8) = (15)/(56)`

This is a proper fraction and

it is in the simplest form