Question

(4 power -1 +8 power -1)×(3 Power-1-9 power -1)÷1/12=5x

Answer 1

$( {4}^{ - 1} + {8}^{ - 1} ) \times ({3}^{ - 1} - {9}^{ - 1} ) \div \frac{1}{12} = 5x \\ ( \frac{1}{4} + \frac{1}{8} ) \times ( \frac{1}{3} - \frac{1}{9} ) \times 12 = 5x \\ (\frac{2 + 1}{8} ) \times ( \frac{3 - 1}{9}) \times 12 = 5x \\ \frac{3}{8} \times \frac{2}{9} \times 12 = 5x \\ 1 = 5x \\ \frac{1}{5} = x \\ x = \frac{1}{5}$