Solving An Equation

Linear Equation of Class 7

Method to Solving An Equation

Solving an equation means determining its roots i.e., determining value of the variable which satisfies it.

Rules for Solving Linear Equations in One Variable.

We learnt the rules for solving an equation in one variable. Let us recall them. They are:

Rule 1:     Same quantity (number) can be added to both sides of an equation without changing the equality.

Rule 2:     Same quantity can be subtracted from both sides of an equation without changing the equality.

Rule 3:     Both sides of an equation may be multiplied by the same non-zero number without changing the equality.

Rule 4:     Both sides of an equation may be divided by the same non-zero number without changing the equality.

It should be noted that some complicated equations can be solved by using two or more of these rules together.

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