Question

I think of a number I double it and subract two I get nine​

Answer 1

5.5

Explanation:

Let
`x` be equal to the number.

1) Convert the clues into an equation

If you double it (
`2x`) and subtract two (
`-2`), you get 9 (
`=9`).

`2x-2=9`

2) Solve the equation

`2x-2=9`

Add 2 to both sides

`2x-2+2=9+2\\2x=11`

Divide both sides by 2

`(2x)/(2)=(11)/(2) \\x=5.5`

Therefore, the number is 5.5.

I hope this helps!