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Question
Evaluate: `(- 7)/6 + 4/-15 + (-4)/-30`
Sum
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Solution
`(- 7)/6 + 4/-15 + (-4)/-30`
`=(- 7)/6 + (-4)/15 + (4)/30`
`= (- 7 xx 5)/(6 xx 5) + (-4 xx 2)/(15 xx 2) + (4 xx 1)/(30 xx 1)` (∵ L.C.M. of 6, 15, 30 = 30)
`= (-35)/30 + (-8)/30 + 4/30`
`= (- 35 - 8 + 4)/30`
`= (- 43 + 4)/30 = (-39)/30`
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