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Find the sum: -819+-257

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Question

Find the sum:

`(-8)/19 + (-2)/57`

Sum
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Solution

Given, `(-8)/19 + (-2)/57`

= `(- 8)/19 - 2/27`

Now the LCM of the denominator of the former parameter = 57

= `((- 8 xx 3) - (2 xx 1))/57`

= `(- 24 - 2)/57`

= `(- 26)/57`

The numerator and denominator of the obtained rational number have no other multiple than 1.

Hence, `(- 26)/57`

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Chapter 8: Rational Numbers - EXERCISE 8.2 [Page 141]

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NCERT Mathematics [English] Class 7
Chapter 8 Rational Numbers
EXERCISE 8.2 | Q 1. (v) | Page 141

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