..351 42 439 9 313131010 1 - 10227S U T M

3333 ...35

1 42 43

9 9

3

1

3

10

10 1

- 10

2

27

S u t m: OÀN TI N TRUNG - THCS Hoàng V n Th - N

=

=

2010

=

=

=

(1 +16)

25

100

5

20

17

17

17

17

( - 1)( - 3)

- 4 + 3

2

= 3 -