[tex] - 0.2 \times - ( \frac{4}{7} ) \times ( - 5) \times 7 = - \frac{1 \times 4 \times 5 \times 7}{5 \times 7 } = - 4[/tex]

[tex] \frac{1}{3} \times 0.1 \times ( - \frac{1}{4} ) \times ( - 12) = \frac{1 \times 1 \times 1 \times 12}{3 \times 10 \times 4} = \frac{1}{10} = 0.1[/tex]