Question
Simplify:$(3^{-1}\times4^{-1})^{-1}\times5^{-1}$
✓
Answer
$(3^{-1}\times4^{-1})^{-1}\times5^{-1}$$=\Big(\frac{1}{3}\times\frac{1}{4}\Big)^{-1}\times5^ {-1}$
$=\Big(\frac{1}{12}\Big)^{-1}\times\frac{1}{5}$
$=(12)^{1}\times\frac{1}{5}=\frac{12}{5}$
$=\Big(\frac{1}{12}\Big)^{-1}\times\frac{1}{5}$
$=(12)^{1}\times\frac{1}{5}=\frac{12}{5}$
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