Aflati x, va rog dau coroana

Explicație pas cu pas:
Am facutvpe foaie sper ca s bine, succes in contiunare
[tex]\frac{x}{\frac{972}{900} } = \frac{\frac{3375}{1000} }{\frac{21}{10} } \\\\x=\frac{972}{900} * \frac{3375}{1000} * \frac{10}{21}\\\\x=\frac{243}{36} * \frac{135}{25} * \frac{1}{21} \\\\x= \frac{81}{13} * \frac{27}{5} * \frac{1}{21} \\\\x=\frac{2187}{1365}\\\\x=\frac{729}{455}[/tex]