Пошаговое объяснение:

[tex] - 2a \times( - 0.1) = 2a \times 0.1 = 0.2a[/tex]

[tex]7.2a \times ( - 5b) = - 7.2 a \times 5b = - 36ab[/tex]

[tex]9.2 \times ( - 2a) \times ( - 1) = 9.2 \times 2a \times 1 = 9.2 \times 2a = 18.4a[/tex]

[tex] - 0.4m \times (0.5n) = - 0.4m \times 0.5n[/tex]

[tex]9m \times ( - 5a) \times ( - 4b) = 9m \times 5a \times 4b = 180abm[/tex]

[tex] - 10a \times ( - 0.1b) = 10a \times 0.1b = ab[/tex]

[tex]0.25m \times ( - 4x) = - 0.25 \times 4x = - x[/tex]