# Absolute Value

#### harpazo

##### Pure Mathematics
Banned
If x = - 5, what is |x - 7|?

#### TheJason

Staff member
Moderator
$$\displaystyle |x - 7|$$

given:

$$\displaystyle x = - 5$$

so

$$\displaystyle |(-5) - 7|$$

$$\displaystyle |-13|$$

$$\displaystyle 13$$

The absolute value of a negative number is positive.

Last edited:

#### harpazo

##### Pure Mathematics
Banned
This is a practice problem unless indicated otherwise.

#### harpazo

##### Pure Mathematics
Banned
$$\displaystyle |x - 7|$$

given:

$$\displaystyle x = - 5$$

so

$$\displaystyle |(-5) - 7|$$

$$\displaystyle |-13|$$

$$\displaystyle 13$$

The absolute value of a negative number is positive.
Wrong. What is |-5 -7|?

|-12|

12

#### harpazo

##### Pure Mathematics
Banned
You need to go BACK TO THE FUTURE with math.