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Nguyễn Thành Đạt
31 tháng 1 2022 lúc 10:50

UKM

^6^7g^7*(KHV C GTGFCCGttedx

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Nhok Cuồng Tùng
8 tháng 12 2015 lúc 20:30

a) goi hai so la a ; b va a >b

vi UCLN(a,b)=18=>a=18k            ;       b=18q       (trong do UCLN (k,q)=1 va k>q)

=>a+b=162

18k+18q =162

18(k+q)=162

k+q=9

ta co bang sau   

 

k1234
q8765
a18365472
b14412610890

vay ...........

   
    
    

 

Nguyễn Nhật Quang
29 tháng 10 2016 lúc 13:10

21453 

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542454550212.100000000000000000000000000000000000000000000000000000000000000000000000000000
  
  
viet
12 tháng 11 2017 lúc 19:54

ngyen vu thien nhan coi sach

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Nguyễn Thị Hằng
2 tháng 7 2022 lúc 21:37

hi

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Cao Ngoc Linh Giang
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Trương Hoàng Lân
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Nguyễn  Thuỳ Trang
6 tháng 12 2015 lúc 8:51

a=45m (m thuộc N),b=45n(n thuộc N)

(m;n)=1 suy ra a+b=270;45(m+n)=270

m+n=6 Mà (m;n) =1 suy ra m+n=5+1,vậy a=45,b=225,b=45

mk nhanh nhất ****

Nguyễn Phúc Hưng
2 tháng 1 2017 lúc 9:57

Bạn Nguyễn Thùy Trang trả lời kiểu gì mình ko hiểu.

Trương Hoàng Lân
20 tháng 4 2017 lúc 20:39

Cho tam giac ABC vuong tai A. Tia phan giac goc ABC cat AC tai D. Ve DE vuong goc BC tai E

a)C/m: tam giac ABD = tam giac EBD va AD = ED

b)C/m: AD < DC

c)AE cat BD tai F. C/m: CF la trung tuyen cua tam giac ACE

d)Duong thang vuong goc voi BC tai b cat Ac tai M . Goi I la diem bat ky thuoc doan AB.tren tia doi AB lay J sao cho BI = AJ. Duong thang vuong goc voi AB tai I cat BM tai P. C/m: PJ vuong goc CJ

(de kho, ai nhanh k nhe)