Question

How do you simplify `-abs(8+9-21)`?

Answer 1

We can simplify the expression to `-4`

Explanation:

`color(lightblue)"How?"`

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- First we add the numbers inside `| |`
`=>` `8+9-21= 17-21 => -4`

Now we are left with `-|-4|`

We have to apply absolute rule which is `|-a|=a`

`|-4|=4`

We sill have `-`

`-|-4| => -4`

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That is all, easy right? `color(green)"✔"`