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Variable
It means something that can vary or change. It takes different numerical values. Usually variables are denoted by letters of the alphabets. For example, x, y, z, a, b, c etc.

EXPRESSION
Expressions are obtained by placing mathematical operators like addition, subtraction, multiplication and division on the variables.
For example, 2x + 3
This expression is formed by multiplying x by 2 and then adding 3 to the product.

EQUATION
An equation has always an equality sign. An equation can be formed by using equality sign between two expressions with the condition that these two expressions should have equal value. Atleast one of the two expressions should have equal value. The            equality sign means the value of the expression to the left of the sign is equal to the value of the expression to the right of the sign.
An equation remains the same, when the expressions on the left and on the right are interchanged.
For example,    2x + 3 = 5x –5 is same as 5x–5 = 2x +3

LIVE MATHS FOR CLASS 7

EDUCARE

Course : CBSE Class 7

Start Date : 21.01.2022

End Date : 03.03.2022

Types of Batch : Live Online Class

 Subject M T W T F S S Mathematics(120 hours) 7:00 PM 7:00 PM 7:00 PM 7:00 PM 7:00 PM - - 