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2 tháng 1 2016

@@@ ! ko làm toán lại còn ngồi hát !

9 tháng 1 2016

vì UCLN(a,b)=2 nên:

a=2n

b=2m                                         (m,n thuộc N*; UCLN(m,n)=1)

có axb=2nx2m=4xmxn=24

=>mxn=6

 

Ta có bảng

bạn tự làm nốt nhé. chọn các cặp số có tích =6 và là 2 số nguyeent ố cùng nhau. :V

 

31 tháng 1 2022

UKM

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

8 tháng 12 2015

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 ...........

   
    
    

 

29 tháng 10 2016

21453 

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