Question

$\frac{9 \sqrt{6} }{6} - \frac{ \sqrt{6} }{6} =$

Answer 1

$\frac{9 \sqrt{6} }{6} - \frac{ \sqrt{6} }{6} = \frac{9 \sqrt{6} - \sqrt{6} }{6 } = \frac{8 \sqrt{6} }{6} = \frac{4 \sqrt{6} }{3}$