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Evaluate: - 2/3 + 5/2 + 2 - Mathematics

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Question

Evaluate: `- 2/3 + 5/2 + 2`

Sum

Solution

`- 2/3 + 5/2 + 2`

`= - 2/3 + 5/2 + 2/1`

 

`= (- 2 xx 2)/(3 xx 2) + (5 xx 3)/(2 xx 3) + (2 xx 6)/(1 xx 6)`
(∵ L.C.M. of 3, 2 and 1 = 6)


`= (- 4)/6 + (15)/6 + (12)/6`


` = (- 4 + 15 + 12)/6 = (23)/6`

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

APPEARS IN

Selina Concise Mathematics [English] Class 7 ICSE
Chapter 2 Rational Numbers
Exercise 2 (C) | Q 4.4
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