Question

A number is multiplied by 2, and then the product is added to 9. The result in 9. What is the number?

Answer 1

`color(maroon)(" The number is ") color(green)( 0`

Explanation:

Let x be the number.

`2 * x = 2x`

`2x + 9 = 9`

`2x = 9 - 9`

`2x = 0, " or " x = 0`