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Explain how to simplify the expression -98 - 31? Using the additive inverse.

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Given:

The expression is -98 - 31.

To find:

The value of the given expression using the additive inverse.

Solution:

According to the additive inverse, for any number a,


a+(-a)=0

Using additive inverse, we have


98+(-98)=0 ...(i)


31+(-31)=0 ...(ii)

Now, using (i) and (ii), we get


98+(-98)+31+(-31)=0


(98+31)+(-98-31)=0


129+(-98-31)=0

Subtracting 129 from both sides, we get


-98-31=-129

Therefore, the value of given expression is -129.

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