[tex] - 4.7 \times ( - 4) \times 0.25 \times ( - 3) = \\ - 4 \times 0.25 \times ( - 3) \times ( - 4.7) = \\ - 1 \times 14.1 = - 14.1[/tex]

[tex] - 2 \times \frac{4}{5} + \frac{4}{5} \times ( - 13) = \frac{4}{5} \times ( - 2 - 13) = \\ \frac{4}{5} \times ( - 15) = - 12[/tex]

[tex] - \frac{3}{22} (2.2 - 1 \frac{7}{15} x) - 0.2(x - 7 \frac{1}{2} ) = \\ - \frac{3 \times 22}{22 \times 10} + \frac{3 \times 22}{22 \times 15} x - 0.2x + \frac{1 \times 15}{5 \times 2} = \\ - 0.3 + 0.2x - 0.2x + 1.5 = \\ - 0.3 + 1.5 = 1.2[/tex]