# How do you translate the words into a mathematical expression: the difference of 5 and twice x?

Aug 16, 2016

$\Rightarrow 5 - 2 x \text{ or } 2 x - 5$

#### Explanation:

Look at each phrase separately:

"Twice $x$ means x multiplied by 2. This is written as $2 x$

The "DIFFERENCE" is the answer to a subtraction operation.
It is always used with the word "AND" indicating which two numbers must be subtracted.

The DIFFERENCE between 10 AND 7 $\text{ "rArr } 10 - 7 = 3$

In the context of the question it does not matter which way the terms are subtracted.

The DIFFERENCE of 5 AND "twice x" is written as:

$\Rightarrow 5 - 2 x \text{ or } 2 x - 5$