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Add: 13/-16 "And" (- 11)/24 - Mathematics

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Question

Add: `13/-16  "and"  (- 11)/24`

Sum

Solution

`13/-16  "and"  (- 11)/24 = (- 13)/16 + (- 11)/24`

 

`= (- 13 xx 3)/(16 xx 3) + (- 11 xx 2)/(24 xx 2)`  
(∵ L.C.M. of 16 and 24 = 48)

`= (- 39)/48 + (-22)/48`

`= ((- 39) + (- 22))/48 = (- 39 - 22)/48 =(- 61)/48`

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Concept for Problem Solving Using Operations on Rational Numbers
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Chapter 2: Rational Numbers - Exercise 2 (C)

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Selina Concise Mathematics [English] Class 7 ICSE
Chapter 2 Rational Numbers
Exercise 2 (C) | Q 2.8
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