NCERT Solutions for Class 7 Mathematics Chapter 12
Important NCERT Questions
Class vii Math Chapter 12 Algebraic Expressions Exercise 12.2
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 1
Simplify combining like terms: 21b-32+7b-20b
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21b-32+7b-20b = 21b+7b-20b-32
= 28b-20b-32 = 8b-32
Class 7 Maths Chapter 12 Exercise 12.2
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