Question

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Answer 1

$\displaystyle 23:(6\frac{7}{15}+1\frac{12}{17})-(4\frac{2}{5}-2\frac{3}{5}):5=23:((6+1)+(\frac{7}{15}+\frac{12}{17}))-(\frac{22}{5}-\frac{13}{5})*\frac{1}{5}=\\\\23:(7+\frac{299}{255})-\frac{9}{5}*\frac{1}{5}=23:(7+1\frac{44}{255})-\frac{9}{25}=23:(7+1+\frac{44}{255})-\frac{9}{25}=\\\\23:(8+\frac{44}{255})-\frac{9}{25}=23:8\frac{44}{255}-\frac{9}{25}=23:\frac{2084}{255}-\frac{9}{25}=23*\frac{255}{2084}-\frac{9}{25} =\\\\\frac{5865}{2084}-\frac{9}{25}=\frac{127869}{52100}=2\frac{23669}{52100}$