[(0,5)^2-\frac{5}{36} :(\frac{1}{3})^2+4:3\frac{1}{4}]
źródło:
[(0,5)^2-\frac{5}{36} :(\frac{1}{3})^2+4:3\frac{1}{4}]=[0,25-\frac{5}{36} :\frac{1}{9}+4:\frac{13}{4}]=0,25-\frac{5}{36} *\frac{9}{1}+4*\frac{4}{13}=0,25-\frac{5}{4} +\frac{16}{13}=0,25-1,25+\frac{16}{13}=-1+1\frac{3}{13}=\frac{3}{13}