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Question
Verify the identity property for addition and multiplication for the rational numbers `15/19` and `(-18)/25`
Solution
`15/19 + 0 = 15/19 + 0/19`
= `(15 + 0)/19`
= `15/19`
`(-18)/25 + 0 = (-18)/25 + 0/25`
= `(-18 + 0)/25`
= `(-18)/25`
Identify property for addition verified.
`15/19 xx 1 = (15 xx 1)/19 = 15/19`
`(-18)/25 xx 1 = (-18 xx 1)/25 = (-18)/25`
Identify property for multiplication verified.
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