Question

Помогите пожалуйста решить ​

Answer 1

2)

$\frac{12.4}{x} = \frac{5.58}{0.9} \\ 5.58x = 12.4 \times 0.9 \\ 5.58x = 11.16 \\ x =2$

3)

$\frac{4.5}{x} = \frac{12.5}{4} \\ 12.5x = 4.5 \times 4 \\ 12.5x = 18 \\ x = 1.44$

4)

$\frac{1.5}{2} = \frac{x}{8} \\ 2x = 1.5 \times 8 \\ 2x = 12 \\ x = 6$