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

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 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. II. Multiplication


15. Exercises ( do by discuss)


16. 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”.)

17. About “Sukses” dan “Gagal”