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Adding and Subtracting Like terms - Worksheet

Question 3 (vii) Important Deleted for CBSE Board 2024 Exams You are here

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Chapter 10 Class 7 Algebraic Expressions

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Ex 10.1
Ex 10.2
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Adding and Subtracting Like terms - Worksheet
Observing patterns

Question 3 (vii) - Adding and Subtracting Like terms - Worksheet - Chapter 10 Class 7 Algebraic Expressions

Last updated at May 29, 2023 by Teachoo

Ex 12.2, 3 - Chapter 12 Class 7 Algebraic Expressions - Part 7

Ex 12.2, 3 - Chapter 12 Class 7 Algebraic Expressions - Part 8

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Question 3 (Method 1) Subtract: (vii) 5a2 – 7ab + 5b2 from 3ab – 2a2 – 2b2 (3ab – 2a2 – 2b2) − (5a2 – 7ab + 5b2 ) = 3ab – 2a2 – 2b2 − 5a2 + 7ab − 5b2 = −2a2 − 5a2 − 2b2 − 5b2 + 3ab + 7ab = a2 (−2 − 5) + b2 (−2 − 5) + ab (3 + 7) = a2 (−7) + b2 (−7) + ab (10) = −7a2 − 7b2 + 10ab Question 3 (Method 2) Subtract: (vii) 5a2 – 7ab + 5b2 from 3ab – 2a2 – 2b2 We need to subtract ((5a2 – 7ab + 5b2 ) from (3ab – 2a2 – 2b2) 5a2 − 7ab + 5b2 from 3ab − 2a2 − 2b2 Answer is 10ab – 7a2 – 7b2

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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.

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