Question

3$(3^{-1}+4^{-1}) divided by 5^{-1} is?$

Answer 1

Step-by-step explanation:

$3(3^{-1}+4^{-1}) \div 5^{-1}$

$= 3( \frac{1}{3} + \frac{1}{4} ) \div \frac{1}{5}$

$= 3 \times \frac{7}{12} \times 5$

$= \frac{35}{4}$