\[2,021\ :(2,3x - 41,7) = 0,47\]
\[2,3x - 41,7 = 2,021\ :0,47\]
\[2,3x = 4,3 + 41,7\]
\[2,3x = 46\]
\[x = 46\ :2,3 = 460\ :23\]
\[x = 20.\]