If the Replacement Set is the Set of Natural Numbers, Solve: 3x - 4 > 6 - Mathematics

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Sum

If the replacement set is the set of natural numbers, solve:  3x - 4 > 6

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Solution

3x – 4 > 6

3x – 4 + 4 > 6 + 4 (Adding 4)

⇒ 3x > 10

`"3x"/3 > 10/3`  ...(Dividing by 3)

⇒ x > `10/3`

⇒ x > `3 1/3`

Required answer = { 4, 5, 6, …}

Concept: Replacement Set and Solution Set
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Chapter 15: Linear Inequations - Exercise 15 (A) [Page 173]

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Selina Concise Mathematics Class 8 ICSE
Chapter 15 Linear Inequations
Exercise 15 (A) | Q 1.3 | Page 173
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