Question

вычислите -5/11:-13/33*78:-17/15+3 ЦЕЛЫХ 2/5:-45/34

Answer 1

$displaystylett-frac{5}{11} :Big(-frac{13}{33}Big)cdot78:Big(-frac{17}{15}Big) +3frac{2}{5}:Big(-frac{45}{34}Big)=\\\=-frac{5}{11}cdotBig(-frac{33}{13} Big)cdot 78cdotBig(-frac{15}{17}Big)+frac{17}{5}cdotBig(-frac{34}{45}Big)=\\\=frac{5cdot3cdot6}{1} cdotBig(-frac{15}{17} Big)+Big(-frac{528}{225}Big)=\\\=-frac{1350}{17}-frac{528}{225}=frac{303750-8976}{3825}=frac{294774}{3825} =\\\=frac{98258}{1275}= 77frac{83}{1275}$