How do you evaluate $| 31 | - | - 51 | + 82$ $abs31-abs(-51)+82$ ?

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How do you evaluate $| 31 | - | - 51 | + 82$ $abs31-abs(-51)+82$ ?

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Answer 1 · 2016-12-03T14:34:31

$62$ $62$

Explanation:

The $absolute value$ $color(blue)"absolute value"$ is always positive. This is because it gives a measure of how far a number is from zero, irrespective of it's sign.

That is $| 4 | = | - 4 | = 4$ $|4|=|-4|=4$ since 4 and - 4 are both 4 units from zero.

$\Rightarrow | 31 | - | - 51 | + 82$ $rArr|31|-|-51|+82$

$= 31 - 51 + 82$ $=31-51+82$

Evaluate the expression from left to right.

$= - 20 + 82 = 62$ $=-20+82=62$

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How do you evaluate $| 31 | - | - 51 | + 82$ $abs31-abs(-51)+82$ ?

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