Hasil dari (5/7-3/5)^-3 adalah

[tex]=( \frac{5}{7}- \frac{3}{5})^{-3} \\ \\ =( \frac{25}{35}- \frac{21}{35})^{-3} \\ \\ =( \frac{4}{35})^{-3} \\ \\ = \frac{1}{( \frac{4}{35})^{3} }= \frac{1}{\frac{4^3}{35^3} } \\ \\ = \frac{35^3}{4^3} = \frac{42.875}{64} = 669 \frac{59}{64} = 669,92 [/tex]