# Question #299fa

Mar 10, 2017

$2 \left(9 - x\right) + \left(9 - x\right) = 9$

#### Explanation:

We have to write an equation such that

9 equal to some expression. On solving the

equation we get the other number.

The other number is $x$

As per the statment $2 \times \left(9 - x\right)$ is the other number

The difference is $9 - x$

The value of the other number plus the difference between the two numbers is equal to $9$

Then the equation is -

$2 \times \left(9 - x\right) + \left(9 - x\right) = 9$

Let us verify it -

$18 - 2 x + 9 - x = 9$
$27 - 3 x = 9$
$- 3 x = 9 - 27 = - 18$
$x = \frac{- 18}{- 3} = 6$
$x = 6$