\(\text{Giải:}\)
\(\frac{678}{1000}=\frac{678:2}{1000:2}=\frac{339}{500}\)
\(\text{Hoc tốt!!!}\)
\(\frac{678}{1000}\)
\(=\frac{339\cdot2}{500\cdot2}\)
\(=\frac{339}{500}\)
\(\frac{678}{1000}=\frac{678:2}{1000:2}=\frac{399}{500}\)
kết quả bằng \(\frac{399}{500}\)
\(\frac{678}{1000}=\frac{678\div2}{1000\div2}=\frac{339}{500}\)