Помогите!!!!!! 6 класс "58"

А)
$\frac{14}{15} = \frac{3}{x} \\ \\ \frac{x}{3}=\frac{14}{15}\\ \\ x= \frac{45}{14}$
б)
$\frac{12}{29}= \frac{1}{58x}\\ \\ 58x= \frac{29}{12} \\ \\ x= \frac{1}{24}$
в)
$\frac{12}{25}= \frac{7}{15x} \\ \\ \frac{15x}{7}= \frac{25}{12} \\ \\ x= \frac{25}{12} *\frac{7}{15}\\ \\ x= \frac{35}{36}$
г)
$\frac{144}{125}= \frac{3}{2x}\\ \\ \frac{2x}{3} = \frac{125}{144} \\ \\ x=\frac{125}{144} * \frac{3}{2} \\ \\ x= \frac{125}{96}$