4 1/4:2 1/2x2 2/5+1 1/5-3/4

[tex]4 \frac{1}{2} \div 2 \ \frac{1}{2} \times 2 \ \frac{2}{5} + 1 \ \frac{1}{5} - \frac{3}{4} \\ \frac{9}{2} \div \frac{5}{2} \times \frac{12}{5} + \frac{6}{5} - \frac{3}{4} \\ \frac{9}{2} \times \frac{2}{5} \times \frac{12}{5} + \frac{6}{5} - \frac{3}{4} \\ \frac{9}{5} \times \frac{12}{5} + \frac{24}{20} - \frac{15}{20} \\ \frac{108}{25} + \frac{9}{20} \\ \frac{432}{100} + \frac{45}{100} \\ \frac{477}{100} \\ 4 \frac{77}{100} [/tex]