Ex 12.2, 1 - Chapter 12 Class 7 Algebraic Expressions - Part 4

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  1. Chapter 12 Class 7 Algebraic Expressions
  2. Serial order wise

Transcript

Ex 12.2, 1 Simplify combining like terms: (iv) 3a – 2b – ab – (a – b + ab) + 3ab + b – a 3a – 2b – ab – (a – b + ab) + 3ab + b – a = 3a – 2b – ab – a + b – ab + 3ab + b – a = 3a – a – a – 2b + b + b – ab – ab + 3ab = a(3 – 1 – 1) + b (–2 + 1 + 1) + ab (–1 –1 + 3) = a (3 – 2) + b (–2 + 2) + ab (3 – 2) = a (1) + b (0) + ab (1) = a + ab

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.