$$n/2-2n/3+3n/4=16$$
$n = \frac{192}{7} = 27\frac{3}{7} \approx 27.428571429$
$$6n-4\times 2n+3\times 3n=192$$
$$6n-8n+3\times 3n=192$$
$$-2n+3\times 3n=192$$
$$-2n+9n=192$$
$$7n=192$$
$$n=\frac{192}{7}$$
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