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# Linear Equation

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What is a linear equation: An equation is a condition on a variable. A variable takes on different values; its value is not fixed . Variables are denoted usually by letter of alphabets, such as x, y , z , l , m , n , p etc. From variables we form expression. Linear equation in one variable: These are the type of equation which have unique (i.e, only one and one ) solution. For example: 2 x + 5 = 0 is a linear equation in one variable. Root of the equation is −5/2
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Linear Equation
What is a linear equation: An equation is a condition on a variable. A variable takes on different values; its
value is not fixed . Variables are denoted usually by letter of alphabets, such as x, y , z , l , m , n , p etc. From
variables we form expression.
Linear equation in one variable: These are the type of equation which have unique (i.e, only one and one )
solution.
For example: 2 x + 5 = 0 is a linear equation in one variable.
Root of the equation is -5/2

How to Solve Linear Equations
Method1: Isolate the variable: In this method we wil isolate the
variable on one side and number on other sides.
Steps and example for solving equation:
Example1: solve 2 x+3=15
Solution1: Given equation is: 2 x+3=15
Step 2: Subtract 3 from both side
2 x +3-3 =15 -3
2 x =12
Step3: isolate the variable by dividing 2 to both side
2x2 = 122
x =6
Solution is 6

Solving Linear Equations Examples
Example1: Solve 3n + 7 =25
Solution1: Given equation is 3n +7 = 25
Step1: Subtract 7 from both sides
3n+7-7 = 25-7
3n = 18
Step 2: Divide both side by 3
3n3 = 183
n = 6
Solution1: n=6

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Linear Equation

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