DISCUSS: A Family of Equations The equation
Is really a family of equations, because for each value of
(a)

(b)

(c )

(a)
To find:
To find the value of
Approach:
Simplest type of equation is called a linear equation or first degree equation (power of
We solve the equations by changing it to an equivalent equation with all variables on one side and all constants on the other side.
Ex:
Here
Two equations with exactly same solution are called equivalent equations.
Properties of equality
a) 
Adding the same quantity to both sides of an equation gives an equivalent equation. 
b) 
Multiplying both sides of an equation by the same non zero value gives an equivalent equation 
(b)
To find:
To find the value of
(c)
To find:
To find the value of
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