[(1/4)^-3-(1/3)^-3÷(1/5)^-3]

1.	[(1/4)^-3-(1/3)^-3÷(1/5)^-3]
Answer» It's 7973/125 ${4}^{3} - \frac{27}{125}$ . ====> ${\frac{1}{4}}^{ - 3} - {\frac{1}{3}}^{ - 3} \div {\frac{1}{5}}^{ - 3}$ ${4}^{3} - {3}^{3} \div {5}^{3}$ $64 - \frac{27}{125} = (64 \times 125 - 27) \div 125$ $(8000 - 27) \div 125 = \frac{7973}{125}$

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