Question

$[tex][tex] frac{3(0,5:1,25+ frac{7}{5}:1 frac{4}{7}- frac{3}{11)} }{(1,5+ frac{1}{4}):18 frac{1}{3} }$
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Answer 1

$...=frac{3(frac{1}{2}cdot frac{4}{5}+frac{7}{5}cdot frac{7}{11}-frac{3}{11})}{(frac{3}{2}+frac{1}{4})cdot frac{3}{55}}=\=frac{3(frac{2}{5}+frac{49}{55}-frac{3}{11})}{frac{7}{4}cdot {frac{3}{55}}}=frac{3(frac{2}{5}+frac{46}{11})}{frac{21}{220}}=\=frac{3cdot frac{252}{55}}{frac{21}{220}}=frac{3cdot 252cdot 220}{55cdot 21}=3cdon 12cdot 4=144$