Ex 9.2, 1 - Chapter 9 Class 7 Rational Numbers - Part 8

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Ex 9.2, 1 - Chapter 9 Class 7 Rational Numbers - Part 9

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  1. Chapter 9 Class 7 Rational Numbers
  2. Serial order wise

Transcript

Ex 9.2, 1 Find the sum : (vii) −21/3 + 4 3/5 −21/3 + 4 3/5 = − (2+ 1/3) + (4+ 3/5) = − ((2 × 3 + 1)/3) + ((4 × 5 + 3)/5) = − ((6 + 1)/3) + ((20 + 3)/5) = (−7)/3 + 23/5 = (− 7 × 5 + 23 × 3)/(3 × 5) = (− 35 + 69)/(15 ) = (69 − 35)/(15 ) = 𝟑𝟒/𝟏𝟓

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