Expressions and Equations
Some puzzles in daily life ask for an unknown number, and equations give a systematic way to find it. Chapter 4, Simple Equations, of the NCERT Mathematics textbook for Class 7 begins with what a variable stands for and how an equation expresses a balance between two sides. You will learn to frame an equation from a word problem, to test whether a value satisfies it, and to solve it by doing the same operation on both sides. The chapter ends with practical problems on age, money and measurement solved neatly.
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