Question

How do you evaluate the expression for x = 10 given `(2x + 5)/x`?

Answer 1

`5/2`

Explanation:

We have to substitute the given value of `x=10`in the given algebraic expression we have:

`(2(10)+5)/10`
`=(20+5)/10`
`=25/10`

The numerator and denominator have `5` as common factor so let's calculate the simplest form:

`5/2`

Answer 2

`5/2=2 1/2=2.5`

Explanation:

To evaluate this expression substitute x = 10 into it.

`rArr(2x+5)/x=((2xx10)+5)/10=(20+5)/10=25/10`

There is a common factor of 5 which simplifies to.

`25/10=cancel(25)^5/cancel(10)^2=5/2`

`5/2" may be expressed as a mixed number or as a decimal"`

`rArr5/2=2 1/2=2.5`

Any of these 3 is the value of the expression.