Question

[Nguyễn Bảo Vân]

x,y*xy,x=xy,xy

1,01×xy=7x,y5

tim x va y

Answer 1

[Nguyễn Ngọc Anh Minh]

a/ x,y * xy,x = xy,xy => 10*10*x,y *xy,x = 100*xy,xy

=> xy * xyx = xyxy = xy *101 => xyx = 101 

b/ 

=> 101 * xy = 7xy5 => xyxy = 7xy5 = 7005 + 10* xy 

=> 91*xy = 7005 => xy = 7005:91=