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Add the rational number : (-5)/7 and 3/7...

Add the rational number : `(-5)/7` and `3/7`

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Add the rational number : `(-5)/7\ a n d3/7`
Having same denominator.
Taking `7` as LCM of the denominators and then add both the numerators`=frac{(-5xx1)+(3xx1)}{7}`
`=frac{-5+3}{7}`
`=frac{-2}{7}`
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