Question

еще будет продолжение)

Answer 1

$\frac{0.1 - 0.3}{0.1 + 1.2} = \frac{ - 0.2}{1.3} = - \frac{2}{13} \\ \frac{1}{3 \frac{1}{4} + 3} = \frac{1}{6 \frac{1}{4} } = 1 \div \frac{25}{4} = 1 \times \frac{4}{25} = \frac{4}{25}$