Question

Помогите пжпжпжпжпжпжпжпжпжп

Answer 1

Ответ:

$19) \frac{1}{4} (2.4 - 3.2 + 4.8 - 3.6) = \frac{1}{4} \times 0.4 = \frac{1}{4} \times \frac{4}{10} = \frac{1}{10} = 0.1$

$20) \frac{1}{3} (7.8 - 12.3 - 1.8 + 0.3) = \frac{1}{3} \times ( - 6) = - 2$

$21)(4.9 + 9.17 - 14.35) \times \frac{1}{7} = - 0.28 \times \frac{1}{7} = - \frac{28}{100} \times \frac{1}{7} = - \frac{4}{100} = - 0.04$

$22)(0.81 + 1.89 - 137.7) \times \frac{1}{9} = - 135 \times \frac{1}{9} = - 15$

Answer 2

Ответ:

Пошаговое объяснение: