TINH A 2PHAN 8 NHAN 4 PHAN 7 CHIA 3PHAN 14 B 6 CHIA 1PHAN 3 NHAN 2PHAN 9 GIUP TO GAP TO CAN LOI GIAI CHI TIET VA NGAY BAY GIO

dien dau <,>,=

1phan2+ 1phan4... 1

1phan 5+ 2 phan 13...1

 1phan 12+ 2 phan 14 ...1

1phan 2 +2phan 3... 1

tinh bang 2 cach ;a; mo ngoac 1phan 3 cong2 phan 5 dong ngoac nhan 3phan 4  b;mo ngoac 7phan 9 cong 2phan 3 dong ngoac chia 5phan 6

7phan 19 * 1phan 3 +7 phan 19 * 2phan 3

BAI 1 TINH GIA TRI CUA BTHUC 

A=3PHAN 1+CAN 3 -2PHAN 1-CAN 3 

B=CAN 10-CAN 5 PHAN CAN 2-1 -3CAN 5 +5PHAN CAN 5+3 +2 PHAN CAN 2

BAI 2 GIAI PT 

a)CAN 49-28X+4X MU 2 -5=0

b)1PHAN 2 CAN X-2 -4 CAN 4X -8 PHAN 9 +CAN 9X+18 -5=0 

MOI NGUOI GIUP MINH VS MINH CAN LUON BAY GIO 

CAM ON 

                                                                                            0,25-5 phan 3-5 phan 6

1- 1 phan 2 - 1 phan 2 ^2 - 1phan 2^3 - 1phan 2^4-....- 1phan 2^10 .> 1phan 2^11

moi gio co 60 phut hoi 1phan 5 gio co bao nhieu phut ?

Trong mot gio voi thu nhat chay duoc 1phan 3 be , voi thu hai chay duoc 2 phan 5 be .Hoi trong 1 gio ca hai voi chay duoc bao nhieu phan be nuoc