TÌM X BIẾT

2 . - KIEM TRA TRAC NGHIEM SO HOC 6-HON SO-SO THAP PHAN-PHAN TRAM
Lớp 6 Toán KIEM TRA TRAC NGHIEM SO HOC 6-HON SO-SO THAP PHAN-PHAN TRAM

2 .

,

8

1

5

0

4

−

=

.

2

 

 −

1 1

 

x

3