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Find (M + N) ÷ (M - N), If: M = 3/4 and N = 4/3 - Mathematics

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Question

Find (m + n) ÷ (m - n), if:

m = `3/4` and n = `4/3`

Sum

Solution

Using formula (m + n ) ÷ (m - n)

`= (3/4 + 4/3) ÷ (3/4 - 4/3)`

`= ((3xx3)/(4xx3) + (4xx4)/(3xx4)) ÷ ((3xx3)/(4xx3) - (4xx4)/(3xx4))`

(LCM of 3 and 4 = 12)

`= ((9 +16)/12) ÷ ((9-16)/12)`

`= 25/12 ÷ -7/12`

`= 25/12 xx -12/7 = - 25/7`

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Chapter 1: Rational Numbers - Exercise 1 (D) [Page 22]

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Selina Concise Mathematics [English] Class 8 ICSE
Chapter 1 Rational Numbers
Exercise 1 (D) | Q 11.2 | Page 22
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