CX XENH

bố 50      con 14

all

Ta  có: \(0,\left(2\right)=2.0,\left(1\right)=2.\frac{1}{9}=\frac{2}{9};\)

\(1,8\left(2\right)=1,8+0,0\left(2\right)=1,8+\frac{1}{10}.0,\left(2\right)=1,8+\frac{1}{10}.2.0,\left(1\right)=1,8+\frac{1}{10}.2.\frac{1}{9}=\frac{82}{45}\)

\(\Rightarrow0,\left(2\right)+1,8\left(2\right)=\frac{2}{9}+\frac{82}{45}=\frac{92}{45}\)

sao toàn ảnh kid với ran z?.........kudo thì sao?