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Taking x = -49, y = 512 and z = 718, find x ÷ (y ÷ z). - Mathematics

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Question

Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find x ÷ (y ÷ z).

Sum

Solution

Given, x = `(-4)/9`, y = `5/12` and z = `7/18`

Here, x ÷ (y ÷ z) = `(-4)/9 ÷ (5/12 ÷7/18)` = `(-4)/9 ÷ (5/12 xx 18/7)`  ......`[∵ "Reciprocal of"  7/18 = 18/7]`

= `(-4)/9 ÷ 15/14` = `(-4)/9 xx 14/15`  ......`[∵ "Reciprocal of"  15/14 = 14/15]`

= `(-56)/135`  

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Chapter 8: Rationals Numbers - Exercise [Page 251]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 8 Rationals Numbers
Exercise | Q 94. (j) | Page 251

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