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Question
Compare: `(- 3)/8 and 2/5`
Sum
Solution
`(- 3)/8 and 2/5`
- 3 × 5 and 2 × 8
`(therefore "a"/"b" "and" "c"/"d" => "a" xx "d" "and" "b" xx "c")`
- 15 < 16 (∵ a × d < b × c)
`therefore - 3/8 < 2/5`
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Concept for Problem Solving Using Operations on Rational Numbers
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