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

1 Answer
Proteus
Jun 8, 2016

We can simplify the expression to -4−4

Explanation:

color(lightblue)"How?"How?

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- First we add the numbers inside | |∣∣
=>⇒ 8+9-21= 17-21 => -48+9−21=17−21⇒−4

Now we are left with -|-4|−|−4|

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

|-4|=4|−4|=4

We sill have -−

-|-4| => -4−|−4|⇒−4

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

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