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Question
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`(-2) "and" 2/5`
Solution
`(-2)/1 + 2/5` (LCM of 1 and 5 = 5)
= `(-2xx5)/(1xx5) + (2xx1)/(5xx1)`
= `(-10 + 2)/5 = (-8)/5`
Which is a rational number
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