How do you evaluate $| 15 | - | - 1 |$ $abs(15)-abs(-1)$ ?

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How do you evaluate $| 15 | - | - 1 |$ $abs(15)-abs(-1)$ ?

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Answer 1 · 2018-03-05T12:17:05

14

Explanation:

The symbol surrounding the numbers is called " absolute value ". Its function is to make whatever number it contains positive.

This means that:

$| 15 | = 15$ $|15|=15$

And that:

$| - 1 | = 1$ $|-1|=1$

From this, we can solve the equation:

$| 15 | - | - 1 | = 15 - 1 = 14$ $|15|-|-1|=15-1=14$

Note:

The operation ( $-$ $-$ ) would not have been affected by the absolute value sign even if it was contained within one. Had the sign encompassed the whole equation: $| 15 - (- 1) |$ $|15-(-1)|$ , then the two negatives would have formed a $+$ $+$ , so that $| 15 + 1 | = | 16 |$ $|15+1|=|16|$ . The absolute value would then act on the positive $16$ $16$ , keeping it positive.

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How do you evaluate $| 15 | - | - 1 |$ $abs(15)-abs(-1)$ ?

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How do you evaluate $| 15 | - | - 1 |$ $abs(15)-abs(-1)$ ?