Вычислите (4/5 + 1/6) * (23 2/3 - 15 5/9) * 45/58 - 1/2

29/30*8 1/9*8/29=4/15  

[latex]( \frac{4}{5}+ \frac{1}{6} )*(23 \frac{2}{3}-15 \frac{5}{9})* \frac{45}{58} - \frac{1}{2} =[/latex][latex]5 \frac{7}{12} [/latex] 1) [latex] \frac{4}{5}+ \frac{1}{6} = \frac{24}{30}+ \frac{5}{30}= \frac{29}{30} [/latex] 2) [latex]23 \frac{2}{3}-15 \frac{5}{9} =23 \frac{6}{9}-15 \frac{5}{9}=8 \frac{1}{9} [/latex] 3) [latex] \frac{29}{30}* \frac{73}{9}* \frac{45}{58}= \frac{73}{12}=6 \frac{1}{12} [/latex] 4) [latex]6 \frac{1}{12} - \frac{1}{2}= 6 \frac{1}{12} - \frac{6}{12}=5 \frac{7}{12} [/latex]