This document discusses the operations of addition and subtraction of algebraic forms. It outlines the properties of addition, including commutativity, distributivity, and associativity. Examples of adding and subtracting algebraic expressions are provided. The document also stresses the importance of being a lifelong learner and that success in school will help one achieve success in life. It encourages discussing exercises in multiplication as the next topic.

1. Operation Of Algebraic Form

3. I. Operation Of Addition and Subtraction
The Properties of Addition Operation
 a) Commutative : a + b = b + a
 b) Distributive :
i) a b + a c = a( b + c )
ii) a b – a c = a ( b – c )
 c) Associative
a + b + c = ( a + b ) + c = a + ( b + c ) = ( a + c ) + b
Before discuss about multipication let’s memories about addition and subtraction

4. Examples


5. solution
 a. (3a- 2 ) + ( 7a + 6) = (3a + 7a) + ( -2 +6)
= 10 a + 4
Vertical method :
3a - 2
7a + 6 +
------------
10a + 4

6. Find the others solutions


7. c. 2a + 3b and 3a- 2b

8. d. 5m -7n + 4 and 2m+3n -9

10. 2. Subtract


11. Solution
 a. 4b- 7 from 5b + 2
 ( 5b + 2 ) – (4b- 7) = (5b- 4b) + (2-(-7) )
= b + 9
Vertical method
5b + 2
4b – 7 –
_______
b + 9

12. Find The Others solutions !
 Who would like to try to fin solution ?

13. I have to be a success student

14.  Now, let’s discuss about………..

15. II. Multiplication


16. Exercises ( do by discuss)


17. Remember
 Be a student so long as you still have
something to learn, and this will mean all
your life. ~Henry L. Doherty (“Jadilah
penuntut ilmu selama kau masih memiliki
sesuatu untuk dipelajari, dan hal ini akan
menjadi tujuan seluruh hidupmu”)
 I am learning all the time. The tombstone
will be my diploma. ~Eartha Kitt
(“Aku belajar setiap waktu. Batu nisan akan
menjadi ijazahku”.)

18. About “Sukses” dan “Gagal”