Question

Evaluate the expression 3 4/5x-2 1/2 for x =-10

Answer 1

The value of given expression for x = - 10 is - 81

Explanation:

Given expression as :

3
`(4)/(5)`x - 2
`(1)/(2)`

Or, 3 +
`(4)/(5)`x - 2 -
`(1)/(2)`

Or,
`(19)/(5)`x -
`(5)/(2)`

or,
`(38 x - 25)/(5)`

Now for x = - 10

`(38* (- 10)  - 25)/(5)`

Or,
`{38* (- 2)  - 5}`

∴ - 76 - 5

Or, - 81

Hence The value of given expression for x = - 10 is - 81 Answer