( \frac{2}{7} \times 7 = \frac{2 \times 7}{7} = \frac{14}{7} = 2 )
( \frac{5}{a} \times 4 = \frac{5 \times 4}{a} = \frac{20}{a} )
( \frac{2n}{9} \times 8 = \frac{2n \times 8}{9} = \frac{16n}{9} )
( \frac{3x}{5y} \times 2 = \frac{3x \times 2}{5y} = \frac{6x}{5y} )
( \frac{2}{7} \times 7 = \frac{2 \times 7}{7} = \frac{14}{7} = 2 )
( \frac{5}{a} \times 4 = \frac{5 \times 4}{a} = \frac{20}{a} )
( \frac{2n}{9} \times 8 = \frac{2n \times 8}{9} = \frac{16n}{9} )
( \frac{3x}{5y} \times 2 = \frac{3x \times 2}{5y} = \frac{6x}{5y} )