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Question
For the pair of rational numbers, given below, verify that the multiplication is commutative.
`5/(-3) "and" 13/(-11)`
Solution
`= 5/(-3) xx 13/(-11) = (5xx13)/((-3)xx(-11)) = 65/33`
And, `13/(-11) xx 5/(-3) = (13xx5)/((-3)xx(-11)) = 65/33`
`therefore 5/(-3) xx 13/(-11) = 13/(-11) xx 5/(-3)`
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