Question

Помогите плиз. Упростите выражения. Номер 671

Answer 1

номер 671

1)

$- x \times ( - y) \times ( - z) = - xyz$

2)

$- 4a \times ( - 0.2b) \times ( - 3) = - 2.4ab$

3)

$2 \frac{1}{3} m \times ( - \frac{3}{7} n) \times ( - 5k) = 5kmn$

4)

$( - a) \times ( - b) \times ( - c) \times ( - d) = abcd$

5)

$- 0.8 \times ( - 3x) \times 5y \times ( - 4) = - 48xy$

6)

$- \frac{1}{3} a \times ( - \frac{3}{4} b) \times ( - \frac{4}{5} c) = - \frac{1}{5} abc = -0.2 abc$