Since the additive inverse of ( ndash;5) is +5, the given expression can be written as ( ndash;8) + 5. nbsp; nbsp; nbsp; Let us subtract the magnitu ...

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Standard VI

Mathematics

Additive Identity and Additive Inverse

Subtract:2-8-...

Question

Subtract:

(2) (−8) − (−5)

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Solution

Since the additive inverse of (–5) is +5, the given expression can be written as (–8) + 5.
Let us subtract the magnitudes of the numbers.
8 – 5 = 3
The magnitude 8 is bigger than 5. So, we will give 3 the sign of –8, i.e., the negative sign.
∴ (–8) – (–5) = –3

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Subtract: (2) (−8) − (−5)

Since the additive inverse of (–5) is +5, the given expression can be written as (–8) + 5. Let us subtract the magnitudes of the numbers. 8 – 5 = 3 The magnitude 8 is bigger than 5. So, we will give 3 the sign of –8, i.e., the negative sign. ∴ (–8) – (–5) = –3

Subtract:

(2) (−8) − (−5)

Since the additive inverse of (–5) is +5, the given expression can be written as (–8) + 5.
Let us subtract the magnitudes of the numbers.
8 – 5 = 3
The magnitude 8 is bigger than 5. So, we will give 3 the sign of –8, i.e., the negative sign.
∴ (–8) – (–5) = –3