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Simplify: 14+151-38×35 - Mathematics

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Question

Simplify:

`(1/4 + 1/5)/(1 - 3/8 xx 3/5)`

Simplify
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Solution

Given, `(1/4 + 1/5)/(1 - 3/8 xx 3/5)`

= `((5  +  4)/20)/(1 - 9/40)`

= `(9/20)/((40  -  9)/40)`

= `(9/20)/(31/40)`

= `9/20 xx 40/31`  ...`[∵ "Reciprocal of"  31/40 = 40/31]`

= `18/31`

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Chapter 2: Fractions and Decimals - Exercise [Page 47]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 2 Fractions and Decimals
Exercise | Q 77. | Page 47
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