Question

Обчисліть:
1) −2 · (−44);
2)-0,8*(-5)
3)-20*(-39)
4)-6/7*(-7/18)

Answer 1

Ответ:

$- 2 \times ( - 44) = 2 \times 44 = 88 \\ - 0.8 \times ( - 5) = 0.8 \times 5 = 4 \\ - 20 \times ( - 39) = 20 \times 39 = 780 \\ - \frac{6}{7} \times ( - \frac{7}{18} ) = \frac{6 \times 7}{7 \times 18} = \frac{1}{3}$