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\left(\frac{\left(\frac{2\times \frac{1}{3}}{3}\right)^{-2}}{\left(\frac{9}{4}\right)^{2}\times \left(\frac{2}{5}\right)^{-1}}\right)^{-1}
Redueix la fracció \frac{3}{9} al màxim extraient i anul·lant 3.
\left(\frac{\left(\frac{\frac{2}{3}}{3}\right)^{-2}}{\left(\frac{9}{4}\right)^{2}\times \left(\frac{2}{5}\right)^{-1}}\right)^{-1}
Multipliqueu 2 per \frac{1}{3} per obtenir \frac{2}{3}.
\left(\frac{\left(\frac{2}{3\times 3}\right)^{-2}}{\left(\frac{9}{4}\right)^{2}\times \left(\frac{2}{5}\right)^{-1}}\right)^{-1}
Expresseu \frac{\frac{2}{3}}{3} com a fracció senzilla.
\left(\frac{\left(\frac{2}{9}\right)^{-2}}{\left(\frac{9}{4}\right)^{2}\times \left(\frac{2}{5}\right)^{-1}}\right)^{-1}
Multipliqueu 3 per 3 per obtenir 9.
\left(\frac{\frac{81}{4}}{\left(\frac{9}{4}\right)^{2}\times \left(\frac{2}{5}\right)^{-1}}\right)^{-1}
Calculeu \frac{2}{9} elevat a -2 per obtenir \frac{81}{4}.
\left(\frac{\frac{81}{4}}{\frac{81}{16}\times \left(\frac{2}{5}\right)^{-1}}\right)^{-1}
Calculeu \frac{9}{4} elevat a 2 per obtenir \frac{81}{16}.
\left(\frac{\frac{81}{4}}{\frac{81}{16}\times \frac{5}{2}}\right)^{-1}
Calculeu \frac{2}{5} elevat a -1 per obtenir \frac{5}{2}.
\left(\frac{\frac{81}{4}}{\frac{405}{32}}\right)^{-1}
Multipliqueu \frac{81}{16} per \frac{5}{2} per obtenir \frac{405}{32}.
\left(\frac{81}{4}\times \frac{32}{405}\right)^{-1}
Dividiu \frac{81}{4} per \frac{405}{32} multiplicant \frac{81}{4} pel recíproc de \frac{405}{32}.
\left(\frac{8}{5}\right)^{-1}
Multipliqueu \frac{81}{4} per \frac{32}{405} per obtenir \frac{8}{5}.
\frac{5}{8}
Calculeu \frac{8}{5} elevat a -1 per obtenir \frac{5}{8}.