4 1/4+(0,8x3/5)-36%:1/2

[tex]4 \frac{1}{4} + ( \frac{8}{10} \times \frac{3}{5} ) - \frac{36}{100} \div \frac{1}{2} \\ = \frac{9}{4} + \frac{24}{50} - \frac{9}{25} \times \frac{2}{1} \\ = \frac{225 + 48 - 36 \times 2}{100} \\ = \frac{201}{100}[/tex]
= 2,01