Mathematics
Grade6
Easy

Question

What variables should we add in the expression?

  1. Different    
  2. Same    
  3. Constant    
  4. None    

hintHint:

An algebraic expression consists of two components: a variable and a constant. A variable is quantity that doesn’t have fixed value. It is generally denoted by alphabet. And constant is a fixed value. In this question, we are asked about the necessary condition for addition of variables.

The correct answer is: Same


    We are asked to state the necessary conditions for the variables to be added to each other.
    Variables can be the same or different. They represent any quantity. It’s not fixed.
    Terms having the same variable are called like terms. They can operate with each other like constant numbers. The same variable denotes the same quantity. The same quantities can be added or subtracted.
    Terms having different variables are called unlike terms. They cannot be added or subtracted because different variables can represent different quantities.
    Therefore, the right answer is “same.”

    The like terms are operated with each other. Unlike terms don't add or subtract with each other.

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