[tex]1\ \%=\frac{1}{100}\\\\A) \\\\18\ \%=\not{18}^9*\frac{1}{\not{100}^{50}} =\frac{9}{50}\\\\B)\\\\ 2,8\ \%=\frac{\not{28}^7}{10}*\frac{1}{\not{100}^{25}}=\frac{7}{250}\\\\C)\\\\0,56\ \%=\frac{56}{100}*\frac{1}{100}=\frac{\not{28}^7}{50}*\frac{1}{\not{100}^{25}}=\frac{7}{1250}\\\\D)\\\\212\ \%= \not{212}^{53}*\frac{1}{\not{100}^{25}}=\frac{53}{25}=2\frac{3}{25}[/tex]
