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Algebraic Expessions and Operations on them

  • A variable is something that does not have a fixed value. The value of a variable varies.
  • Variables are represented by English letters such as x, y, z, a, b, c etc.
  • A combination of variables, numbers and operators (+, –, × and ÷) is known as expression.
  • Using different operations on variables and numbers, expressions such as , can be formed.


Meena’s age is 4 years less than 7 times the age of Ravi. Express it using variables. 


Let the age of Ravi be x years…

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