- Linear equation in one variable
An algebraic equation with a single variable whose power is equal to 1 is termed as a
linear equation in one variable.
Eg. : 4x – 3 = 2
Here, the equation is with a single variable whose degree is 1 and hence it is a linear
equation in one variable.
The idea may be explained to the child through the mathematical board.
- Linear equation in two variables
An algebraic equation with two variables and the highest power of the variable as 1 is
termed as a linear equation in two variables.
Eg. : 2x + 3y = 5
Here the equation is with two variables x and y, and also the highest power of the
variables is 1 and hence it is a linear equation with two variables.
The idea may be explained to the child orally supported by relevant text material in
Braille.
- Solution of linear equation in one variable
Any numerical value which satisfies the equation is termed as the solution of the
linear equation in one variable.
Eg. :
Consider the equation, 2x – 1 = 3
2x = 3 +1
2x = 4
x = 2
The idea may be explained to the child through exercises.
