Question

please help solve this

Answer 1

$1 - \frac{1}{3 } - \frac{1}{4} - \frac{1}{6} = \frac{12 - 4 - 3 - 2}{12} = \frac{3}{12} = \frac{1}{4} \\ \frac{1}{4} x = 18 > > > x = 72$