PPT: Simple Equations | Mathematics (Maths) Class 7 (Old NCERT) PDF Download

 Page 1


S i m p l e
E q u a t i o n s
Page 2


S i m p l e
E q u a t i o n s
The word “variable” means something that
can vary, i.e. change. A variable takes on
different numerical values; its value is not
fixed. Variables are denoted usually by
letters of the alphabets, such as x, y, z, l, m,
n, p, etc. From variables, we form
expressions.
What is a
Variable?
Page 3


S i m p l e
E q u a t i o n s
The word “variable” means something that
can vary, i.e. change. A variable takes on
different numerical values; its value is not
fixed. Variables are denoted usually by
letters of the alphabets, such as x, y, z, l, m,
n, p, etc. From variables, we form
expressions.
What is a
Variable?
An equation is a mathematical statement that
contains an equality sign, indicating that the
expression on the left side (LHS) is equal to
the expression on the right side (RHS).
An equation remains the same, when the
expressions on the left and on the right are
interchanged.
What is an
equation?
Page 4


S i m p l e
E q u a t i o n s
The word “variable” means something that
can vary, i.e. change. A variable takes on
different numerical values; its value is not
fixed. Variables are denoted usually by
letters of the alphabets, such as x, y, z, l, m,
n, p, etc. From variables, we form
expressions.
What is a
Variable?
An equation is a mathematical statement that
contains an equality sign, indicating that the
expression on the left side (LHS) is equal to
the expression on the right side (RHS).
An equation remains the same, when the
expressions on the left and on the right are
interchanged.
What is an
equation?
Solve the following equation:
Let’s try!
Page 5


S i m p l e
E q u a t i o n s
The word “variable” means something that
can vary, i.e. change. A variable takes on
different numerical values; its value is not
fixed. Variables are denoted usually by
letters of the alphabets, such as x, y, z, l, m,
n, p, etc. From variables, we form
expressions.
What is a
Variable?
An equation is a mathematical statement that
contains an equality sign, indicating that the
expression on the left side (LHS) is equal to
the expression on the right side (RHS).
An equation remains the same, when the
expressions on the left and on the right are
interchanged.
What is an
equation?
Solve the following equation:
Let’s try!
 Transposing a number is changing
the side of the number or a variable.
In doing so, the sign of the number
has to be changed.
T r a n s p o s e
M e t h o d