Sagot :
Answer:
Linear equations in one variable may take the form [latex]ax+b=0[/latex] and are solved using basic algebraic operations. We begin by classifying linear equations in one variable as one of three types: identity, conditional, or inconsistent. An identity equation is true for all values of the variable.
A linear equation in one variable is an equation which has a maximum of one variable of order 1. It is of the form ax + b = 0, where x is the variable.
The standard form of linear equations in one variable is represented as:
ax + b = 0
Where,
‘a’ and ‘b’ are real numbers.
Both ‘a’ and ‘b’ are not equal to zero.
Thus, the formula of linear equation in one variable is ax + b = 0.
Solving Linear Equations in One Variable
For solving an equation having only one variable, the following steps are followed
Step 1: Using LCM, clear the fractions if any.
Step 2: Simplify both sides of the equation.
Step 3: Isolate the variable.
Step 4: Verify your answer.
For solving equations with variables on both sides, the following steps are followed:
Consider the equation: 5x – 9 = -3x + 19
Step 1: Transpose all the variables on one side of the equation. By transpose, we mean to shift the variables from one side of the equation to the other side of the equation. In the method of transposition, the operation on the operand gets reversed.
In the equation 5x – 9 = -3x + 19, we transpose -3x from the right-hand side to the left-hand side of the equality, the operation gets reversed upon transposition and the equation becomes:
5x – 9 +3x = 19
⇒ 8x -9 = 19
Step 2: Similarly transpose all the constant terms on the other side of the equation as below:
8x -9 = 19
⇒ 8x = 19 + 9
⇒ 8x = 28
Step 3: Divide the equation with 8 on both sides of the equality.
8x/8 = 28/8
⇒ x = 28/8
If we substitute x = 28/8 in the equation 5x – 9 = -3x + 19, we will get 9 = 9, thereby satisfying the equality and giving us the required solution.