$$2+\frac{3x}{5}=15-\frac{2x}{6}$$
$x = \frac{195}{14} = 13\frac{13}{14} \approx 13.928571429$
$$60+6\times 3x=450-5\times 2x$$
$$60+18x=450-5\times 2x$$
$$60+18x=450-10x$$
$$60+18x+10x=450$$
$$60+28x=450$$
$$28x=450-60$$
$$28x=390$$
$$x=\frac{390}{28}$$
$$x=\frac{195}{14}$$
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