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Using suitable rearrangement and find the sum: -5+710+37+(-3)+514+-45 - Mathematics

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Question

Using suitable rearrangement and find the sum:

`-5 + 7/10 + 3/7 + (-3) + 5/14 + (-4)/5`

Sum

Solution

Here, `-5 + 7/10 + 3/7 + (-3) + 5/14+ ((-4)/5)`

= `-5 + (-3) + 7/10 + ((-4)/5) + 3/7 + 5/14`

= `-8 + (7 - 8)/10 + (6 + 5)/14`

= `-8 - 1/10 + 11/14`

= `(-560 - 7 + 55)/70`

= `(-512)/70`

= `(-256)/35`

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Chapter 1: Rational Numbers - Exercise [Page 19]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 1 Rational Numbers
Exercise | Q 102. (b) | Page 19

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