Question

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(16 22/45*0,5-1 61/72:0,5)*5/7+198,9:(9 1/2+23/40:2 3/10)+13 1/2*0,1

Answer 1

$(16frac{22}{45}cdot 0,5-1frac{61}{72}:0,5)cdot frac{5}{7}+198,9:(9frac{1}{2}+frac{23}{40}:2frac{3}{10})+13frac{1}{2}cdot0,1=\ \=(frac{742}{45}cdot frac{1}{2}-frac{133}{72}cdot 2)cdot frac{5}{7}+frac{1989}{10}:(frac{19}{2}+frac{23}{40}:frac{23}{10})+frac{27}{2}cdot frac{1}{10}=\ \ =frac{371}{45}cdot frac{5}{7}-frac{266}{72}cdot frac{5}{7}+frac{1989}{10}:(frac{19}{2}+frac{1}{4})+frac{27}{20}=\ \=$

$=frac{371}{9cdot 7}-frac{1330}{8cdot9cdot7}+frac{1989}{10}:frac{39}{4}+frac{27}{20}=frac{371}{9cdot 7}-frac{1330}{8cdot9cdot7}+frac{102}{5}+frac{27}{20}=\ \ =frac{2968-1330}{8cdot9cdot 7}+frac{408+27}{20}=frac{26}{8}+frac{87}{4}=frac{13}{4}+frac{87}{4}=frac{100}{4}=25$