Adding and Subtracting Like terms - Worksheet

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Chapter 10 Class 7 Algebraic Expressions
Serial order wise

Ex 12.2, 1 - Simplify combining like terms: (i) 21b - 32 + 7b - 20b

 

 

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Question 1 Simplify combining like terms: (i) 21b – 32 + 7b – 20b 21b − 32 + 7b − 20b = 21b + 7b − 20b − 32 = b (21 + 7 − 20) − 32 = b (28 − 20) − 32 = b (8) − 32 = 8b − 32

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