Basic Math Examples

$| - 18 + 6 | + | - 9 |$

Step 1

Simplify each term.

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Step 1.1

Add $- 18$ and $6$ .

$| - 12 | + | - 9 |$

Step 1.2

The absolute value is the distance between a number and zero. The distance between $- 12$ and $0$ is $12$ .

$12 + | - 9 |$

Step 1.3

The absolute value is the distance between a number and zero. The distance between $- 9$ and $0$ is $9$ .

$12 + 9$

Step 2

Add $12$ and $9$ .

$21$