Ex 1.1, 1 - Using appropriate properties find (i) -2/3 x 3/5 + 5/2

Ex 1.1, 1 - Chapter 1 Class 8 Rational Numbers - Part 2

 

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Transcript

Ex 1.1, 1 Using appropriate properties find. (i) – 2/3 × 3/5 + 5/2−3/5 × 1/6 – 2/3 × 3/5 + 5/2−3/5 × 1/6 = – 2/3 × 𝟑/𝟓 −𝟑/𝟓 × 1/( 6) + 5/2 = 𝟑/𝟓 ((−2)/3−1/6)+ 5/2 = 3/5 ((−2 × 2 − 1)/6) + 5/2 = 3/5 ((−4 − 1)/6)+ 5/2 = 3/5 × ((−5))/6+ 5/2 = (−1)/2+5/2 = 4/2 = 2

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.