Question

Пжпжпжпжпжп помогите ТЖБ Матем

Answer 1

0,4:х=6,65

$0.4 \div x = 6.65. \\ \frac{ 2}{5} \times \frac{1}{x} = 6.65 \\ \frac{2}{5x} = 6.65 \\ 2 = 33.25x \\ 33.25x = 2 \\ x = \frac{8}{133}$

2,5•х=5,65

2,5х=5,65

2,5х:2,5=5,65:2,5

х=2,26