a)\(\frac{\left(5\frac{4}{45}-4\frac{1}{15}\right)}{1\frac{1}{3}}.30-\frac{4,25:0.85+1:0.5}{\left(5,36-4,06\right):2,6+6,5}\)
\(=23-1\)
\(=22\)
\(\frac{\left(5\frac{4}{45}-4\frac{1}{15}\right)}{1\frac{1}{3}}.30-\frac{4,25\div0,85+1\div0,5}{\left(5,36-4,06\right)\div2,6+6,5}\)
\(=1\frac{1}{45}\div\frac{4}{3}.30-\frac{\left(4,25\div0,85\right)+\left(1\div0,5\right)}{1,3\div2,6+6,5}\)
\(=\frac{46}{45}\div\frac{4}{3}.30-\frac{5+2}{0,5+6,5}=\frac{23}{30}.30-\frac{7}{7}\)
\(=23-1=22\)