$$\left. \begin{array} { l } { 4 m + 16 = m + 166 } \end{array} \right.$$
$m=50$
$$4m+16-m=166$$
$$3m+16=166$$
$$3m=166-16$$
$$3m=150$$
$$m=\frac{150}{3}$$
$$m=50$$
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