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Question
Using suitable rearrangement and find the sum:
`4/7 + ((-4)/9) + 3/7 + ((-13)/9)`
Solution
Here, `4/7 + ((-4)/9) + 3/7 + ((-13)/9)`
= `4/7 + 3/7 + ((-4)/9) + ((-13)/9)`
= `7/7 - 17/9`
= `1 - 17/9`
= `(9 - 17)/9`
= `(-8)/9`
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