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Ex 1.1
Ex 1.1, 1
![Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (2)](https://i0.wp.com/d1avenlh0i1xmr.cloudfront.net/custom-static-1/html/img/arrow_down.svg "Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (2)"){kind=icon}
Ex 1.1, 2
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Chapter 1 Class 8 Rational Numbers
Serial order wise
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Ex 1.1
- Examples
- Representing rational numbers on number line
Last updated at April 16, 2024 by Teachoo
![Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (27)](https://i0.wp.com/d1avenlh0i1xmr.cloudfront.net/6bb25ead-09db-461d-8734-c9f29f072afe/slide3.jpg "Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (27)")
![Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (28)](https://i0.wp.com/d1avenlh0i1xmr.cloudfront.net/af8c36ff-a69e-4f75-84bf-7f41c088ffbc/slide4.jpg "Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (28)")
Transcript
Ex 1.1, 1 Using appropriate properties find. (ii) 2/5×(−3/7) – 1/(6 ) × 3/2+1/14 × 2/5 2/5×(−3/7) – 1/(6 ) × 3/2+1/14 × 2/5= 𝟐/𝟓× (−3/7) +1/14 × 𝟐/𝟓 – 1/(6 ) × 3/2= 𝟐/𝟓 × ((−3)/7+1/14)−1/6 × 3/2= 2/5 × ((−3 × 2 + 1)/14) −1/6 × 3/2= 2/5 ((−6 + 1)/14) −1/6 × 3/2= 2/5 × ((−5))/14 − 1/6 × 3/2= (−1)/7 − 1/6 × 3/2= (−1)/7 − 1/2 × 1/2= (−1)/7 − 1/4= (−4 − 7)/(7 × 4)= (−𝟏𝟏)/𝟐𝟖
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![Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (54)](https://i0.wp.com/delan5sxrj8jj.cloudfront.net/custom-static-1/misc/Davneet_Singh.jpg "Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (54)")
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Davneet Singh
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.
![Ex 1.1, 1 - Find 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 - [Video] (2024)](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/h8AAvMB+NzmkbcAAAAASUVORK5CYII=)