$$4=\frac{105}{100}-\frac{97}{100}$$
$\text{false}$
$$4=\frac{21}{20}-\frac{97}{100}$$
$$4=\frac{105-97}{100}$$
$$4=\frac{8}{100}$$
$$4=\frac{2}{25}$$
$$\frac{100}{25}=\frac{2}{25}$$
$$\text{false}$$
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