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(1314)5÷(_)2=(1314)3 - Mathematics

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Question

`(13/14)^5 ÷ (_)^2 = (13/14)^3`

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Solution

`(13/14)^5 ÷ underlinebb((13/14))^2 = (13/14)^3`

Explanation:

Let `(13/14)^5 ÷ (x)^2 = (13/14)^3`

⇒ (x)2 = `(13/14)^5/(13/14)^3`

⇒ (x)2 = `(13/14)^(5-3)`  ......`[∵ a^m/a^n = a^(m-n)]`

⇒ (x)2 = `(13/14)^2`

Since, powers are same

∴ x = `13/14`

Hence, `(13/14)^5 ÷ (13/14)^2 = (13/14)^3`

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Chapter 11: Exponents and Powers - Exercise [Page 341]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 11 Exponents and Powers
Exercise | Q 30. | Page 341

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