Using the Principles Together

Multiplication Principle

Addition Principle

Simplifying Algebraic Expressions

Algebraic Expressions

Factor

ALGEBRA? What is it?

• Variables

• Constants

• Terms

• Factors

• Coefficients

Like (or similar) terms

Combining Like terms

Parentheses

Equivalent Equations

The Addition Principle

Notation notes

Find the value of x!

3(2x – 4) = 4(2x+5)

6x – 12 = 8x + 20-12 – 20 = 8x – 6x

2x = -32

x = -16

Count and Simplify it!

- +

x

Count the value of this function!

f(x) = 6x3+ - , f(3) = ?

f(3) = 6. 33+ -

= 6. 27 + -

= 162 + -

f(3) = 166

Find the value of x !

5(x+3) = 3(2x – 1) +6

5x + 15 = 6x – 3 +65x + 15 = 6x + 36x – 5x = 15 – 3

x = 12

x = 12

Find the value of x !

4x (x+3) – 4 = 3x (x + 5)

x = 4 or x = -1

Simplify It!

(b5 x b10 x b15)25 : b5 x b3

b748

Count the value of this formula!

x5 + 5x4y + 10x3y2 +10x2y3 + 5xy4 + y5

x = -4 and y =2

-32

Simplify it!

1

Count and Simplify it !

1

The length of a rectangular field is7/5 its width. If the perimeter of the field is 240 meters, how the length and width of the field?

LENGTH = 70 METERS, WIDTH = 50 METERS

COUNT THIS:

One day, Baa, Beeh, Sat, and Rio go to RachMart to buy some fruits. Baa buys one dragon fruit, two star fruits,

three snake fruits, four jack fruits, and he pays Rp.31.750,-. Beeh buys three star fruits, five jack fruits,

four snake fruits, two dragon fruits, and he pays Rp.43.250,-. Sat buys four jack fruits, one dragon fruit,

two star fruits, eight snake fruits, and he pays Rp.43.000,-. Rio buys four snake fruits, ten jack fruits,

three star fruits, two dragon fruits, and he pays Rp.63.250,-. How price of a star fruit, a jack fruit, a

dragon fruit, and a snake fruit?

ANALYZE AND COUNT IT

ANSWER :

DRAGON FRUIT Rp 1.500,-STAR FRUIT Rp 3.750,-SNAKE FRUIT Rp 2.250,-JACK FRUIT Rp 4.000,-

This presentation is done by:

Atik LatifahEnti Pebriani

Jeffa LVBRachmat SW

Revaldo

Math - A 2012