[tex]\displaystyle (3\frac{1}{4}+0,25-1\frac{5}{24}):(2\frac{3}{4}-4\frac{1}{2}-0,75):(-4\frac{7}{12})=\\\\(\frac{13}{4}+\frac{1}{4}-\frac{29}{24}):(\frac{11}{4}-\frac{9}{2}-\frac{3}{4}):(-\frac{55}{12})=\frac{55}{24}:(-\frac{5}{2}):(-\frac{55}{12})=\frac{55}{24}*\frac{2}5}*\frac{12}{55}=\\\\\frac{1}{12}*\frac{1}{5}*12=\frac{1}{5}=0,2[/tex]
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[tex]\displaystyle (3\frac{1}{4}+0,25-1\frac{5}{24}):(2\frac{3}{4}-4\frac{1}{2}-0,75):(-4\frac{7}{12})=\\\\(\frac{13}{4}+\frac{1}{4}-\frac{29}{24}):(\frac{11}{4}-\frac{9}{2}-\frac{3}{4}):(-\frac{55}{12})=\frac{55}{24}:(-\frac{5}{2}):(-\frac{55}{12})=\frac{55}{24}*\frac{2}5}*\frac{12}{55}=\\\\\frac{1}{12}*\frac{1}{5}*12=\frac{1}{5}=0,2[/tex]