\(\frac{\frac{6}{5}-\frac{2}{5}}{\frac{5x3}{7}-\frac{3x3}{7}}\)
\(=\frac{\frac{4}{5}}{\frac{5x3-3x3}{7}}\)
\(=\frac{\frac{4}{5}}{\frac{6}{7}}=\frac{4}{5}:\frac{6}{7}\)
\(=\frac{14}{15}\)
6/5 - 2/5 : ( 5 x 3/7 - 3 x 3/7 )
= 4/5 : 3/7 x ( 5 - 3 )
= 4/5 : 6/7
= 14/15