3/2x5/6+3/2:9/10-3/2x13/18 3/8x5+5/56-1/7:1/5 4/5:5/8-4/5x24/25+1/25:5/4 x- это знак...

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$1) \frac{3}{2} * \frac{5}{6} + \frac{3}{2} : \frac{9}{10} - \frac{3}{2} * \frac{13}{18}= \frac{3}{2} * \frac{5}{6} + \frac{3}{2} * \frac{10}{9} - \frac{3}{2} * \frac{13}{18}= \frac{3}{2}( \frac{5}{6}+ \frac{10}{9}- \frac{13}{18})=$ $\frac{3}{2}( \frac{15}{18}+ \frac{20}{18}- \frac{13}{18})= \frac{3}{2}* \frac{22}{18}= \frac{3*22}{2*18}= \frac{11}{6}=1 \frac{5}{6}$
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$2) \frac{3}{8}*5+ \frac{5}{56}- \frac{1}{7}: \frac{1}{5}= \frac{15}{8}+ \frac{5}{56}- \frac{1}{7}* \frac{5}{1}= \frac{105}{56}+ \frac{5}{56}- \frac{40}{56}=$ $\frac{70}{56}= \frac{35}{28}= \frac{5}{4}= 1 \frac{1}{4}$
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$3) \frac{4}{5}: \frac{5}{8}- \frac{4}{5}* \frac{24}{25}+ \frac{1}{25}: \frac{5}{4}= \frac{4}{5}* \frac{8}{5}- \frac{4}{5}* \frac{24}{25}+ \frac{1}{25}* \frac{4}{5}= \frac{4}{5}(\frac{8}{5}- \frac{24}{25}+ \frac{1}{25})$ $= \frac{4}{5}( \frac{40}{25}- \frac{24}{25}+ \frac{1}{25})= \frac{4}{5}* \frac{17}{25}= \frac{4*17}{5*25}= \frac{68}{125}$
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