Chỉ ra các cặp phân số bằng nhau trong các phân số...

Câu hỏi: Chỉ ra các cặp phân số bằng nhau trong các phân số sau: \(\frac{{36}}{{54}}\) ; \(\frac{5}{7}\); \(\frac{{27}}{{45}}\); \(\frac{6}{8}\) ; \(\frac{{35}}{{49}}\); \(\frac{3}{5}\); \(\frac{{27}}{{36}}\); \(\frac{2}{3}\)

A \(\begin{array}{l}\frac{{36}}{{54}} = \frac{6}{8}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{45}} = \frac{3}{5}\\\frac{5}{7} = \frac{{35}}{{49}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{36}} = \frac{2}{3}\end{array}\)

B \(\begin{array}{l}\frac{{36}}{{54}} = \frac{2}{3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{45}} = \frac{5}{7}\\\frac{3}{5} = \frac{{35}}{{49}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{36}} = \frac{6}{8}\end{array}\)

C \(\begin{array}{l}\frac{{36}}{{54}} = \frac{3}{5}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{45}} = \frac{6}{8}\\\frac{2}{3} = \frac{{35}}{{49}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{36}} = \frac{5}{7}\end{array}\)

D \(\begin{array}{l}\frac{{36}}{{54}} = \frac{2}{3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{45}} = \frac{3}{5}\\\frac{5}{7} = \frac{{35}}{{49}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{27}}{{36}} = \frac{6}{8}\end{array}\)