Page 57 - Maths Skills - 7
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Simple Equations 55
MIND MAP
Simple Equations
Algebraic Equation
An equation is a sentence that has
Type two equal mathematical expressions
e.g. 4x + 9 = 3x + 10 (one variable)
x + 3y = 9 (two variables)
Linear Equation Non-Linear Equation
An equation involving one or more An equation involving one or more
variables with single power. variables with more than single power.
i.e. x + 7 = 0 (in one variable) i.e. x + 9 = 0 (in one variable)
2
x + y = 12 (in two variables) x + y = 7 (in two variables)
2
2
Verification
Solution After finding the solution of equation,
A number which substituted for the then for verification put the value of that
variable in the equation makes both variable in both sides of given equation
the sides equal is called a solution if L.H.S. = R.H.S.
then it is verified.
Methods for Solutions
Any linear equation in one variable can
be solved using following methods.
1. Trial and error
2. Systematic method
3. Transposition method
4. Cross multiplication method
