Linear Equation in One Variable 1

Linear Equation in One Variable

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018-9095766

Linear Equation in One Variable 2

What is Linear Equation

• What is Linear Equation• What is Variable

Linear Equation in One Variable 3

Linear Equation in One Variable

• A linear equation is an equation for a straight line

• In form of where a and b are real number and x is variable

bax

23 x

Linear Equation in One Variable 4

What is this?

E

Linear Equation in One Variable 5

If use Orange?

O

Linear Equation in One Variable 6

Linear Equation in One Variable cont...

• There is only one unknown value, usually using ,• For examples ,x

03 y31x9)1(3 x

343)1(

xx

63 zz127 oo

Linear Equation in One Variable 7

compare these two equatuons

• Try to compare these two equatuons

514 51x

with value

with unknown

Linear Equation in One Variable 8

51x

• Left - hand side = Right -hand side

Linear Equation in One Variable 9

• What will if put x+1, 5 to the balance scale?

Balance scale

1x 511x 15

What will if adding -1 to the both sides balance scale?

x 4

Result?

Linear Equation in One Variable 10

Addition and Subtraction

1511 x15 x

4x

51x Balance

• Left - hand side = Right - hand side

by adding 1 to both sides

Linear Equation in One Variable 11

Addition and Subtraction ...

• Left - hand side = Right -hand side

15 x4x

51x (ignore 1 step)check the symbol.when shifting cause+ become -

Linear Equation in One Variable 12

Try these

4334 xx

4213 xx

xxxx 315659

Linear Equation in One Variable 13

Multiplication and Division

• Example 1

Linear Equation in One Variable 14

balance scale

• How to put to the balance scale?

x3 633x

36

x 2

Linear Equation in One Variable 15

Multiplication and Division

• Example 1

Linear Equation in One Variable 16

Try These

x53

93 x

953

x

25

3x

Linear Equation in One Variable 17

Mixed operation

• Example 1

Linear Equation in One Variable 18

Try these