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Evaluate - Mathematics

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Question

Evaluate:

`2/3+(-4)/5-1/3-2/5`

Sum

Solution

`2/3+(-4)/5-1/3-2/5`

⇒ `(2/3-1/3)+((-4)/5-2/5)`

⇒ `1/3+(-6)/5`

⇒ `1/3-6/5`

⇒ `((1xx5)-(6xx3))/15`  (∴ LCM of 3 and 5= 15)

⇒ `(5-18)/15` ⇒ `-13/15`

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Chapter 1: Rational Numbers - Exercise 1 (B) [Page 14]

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Selina Concise Mathematics [English] Class 8 ICSE
Chapter 1 Rational Numbers
Exercise 1 (B) | Q 10.2 | Page 14
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