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These signs in the exercises refer to the concept of "absolute value",
In absolute value we don't have "negative" or "positive", instead we measure the distance from point 0,
In other words, we always "cancel out" the negative signs.
In this exercise, we'll change the minus to a plus sign, and simply remain with 19 and a quarter.
And that's the solution!
Determine the absolute value of the following number:
\( \left|18\right|= \)
Absolute value represents distance from zero on the number line. Since distance is always positive, becomes .
The absolute value of a positive number stays the same! For example, because it's already positive.
Never! Absolute value always gives a non-negative result. The smallest possible absolute value is 0, which happens when .
Treat the entire mixed number as one unit. Whether it's or , both equal .
Think of absolute value as "making everything positive". The bars act like a positive filter - negative goes in, positive comes out!
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