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Find the reciprocal of the following: 313÷-465 - Mathematics

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Question

Find the reciprocal of the following:

`3/13 ÷ (-4)/65`

Sum

Solution

Given, `3/13 ÷ (-4)/65`

The reciprocal of `(-4)/65` is `65/(-4)`

∴ `3/13 ÷ (-4)/65 = 3/13 xx 65/(-4)`

= `(65 xx 3)/(13 xx (-4))`

= `15/(-4)`

Hence, the reciprocal of `15/(-4)` is `(-4)/15`.

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Chapter 8: Rationals Numbers - Exercise [Page 250]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 8 Rationals Numbers
Exercise | Q 86. (iii) | Page 250

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