$$1:3=3=2:\underline{5}$$
$\text{false}$
$$\frac{1}{3}=\frac{9}{3}\text{ and }3=\frac{2}{5}$$
$$\text{false}\text{ and }3=\frac{2}{5}$$
$$\text{false}\text{ and }\frac{15}{5}=\frac{2}{5}$$
$$\text{false}\text{ and }\text{false}$$
$$\text{false}$$
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