Question

Помогите решить дз по матем

Answer 1

Ответ:

1.

$- 1.6(2 \times 6 - 7 )= - 1.6 \times 5 = 8$

2.

$- 0.4(3 \times 7 + 4) = - 0.4 \times 25 = - 10$

3.

$- \frac{2}{3} ( \frac{3}{4} - 1.5 \times - 3.5) = - \frac{2}{3} ( \frac{3}{4} + \frac{21}{4} ) = - \frac{2}{3} \times 6 = - 2 \times 2 = 4$

4.

$(8 \times 5 - 5) \times ( - 0.6) = 35 \times ( - 0.6) = - 21$

5.

$0.9( - 8 - 3 \times 4) = 0.9 \times ( - 20) = - 1.8$

6.

$- \frac{1}{4} ( \frac{4}{5} \times 3 \times \frac{3}{4} + 9) = - \frac{1}{4} ( \frac{1}{5} \times \times 3 \times 3 + 9) = - \frac{1}{4} \times \frac{54}{5} = - \frac{27}{10} = - 2 \frac{7}{10} = - 2.7$