Question

If x =2/3y and y = 18, what is the value of 2x - 3

Answer 1

2/3(18)
=12

x=12

2x-3
2(12)-3
24-3
21

Answer 2

`2x-3=21` when x=12.

Explanation:

Given : If
`x=(2)/(3)y` and
`y=18`

To find : The value of
`2x-3`?

Solution :

The expression given as
`x=(2)/(3)y`

Substitute the value of
`y=18`

`x=(2)/(3)* (18)`

`x=2*6`

`x=12`

So, The value of x is 12.

Substitute x in
`2x-3`,

`=2(12)-3`

`=24-3`

`=21`

Therefore,
`2x-3=21` when x=12.