Question

(7целых -1 целая 4/23*3целых 5/6+3целых 1/6*3/19):2/3-2/3

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Answer 1

$\displaystyle (7-1 \frac{4}{23}*3 \frac{5}{6}+3 \frac{1}{6}* \frac{3}{19}): \frac{2}{3}- \frac{2}{3}=3 \frac{5}{6} \\ \\ \\ 1)..1\frac{4}{23}*3 \frac{5}{6}= \frac{27}{23}* \frac{23}{6}= \frac{27}{6}=4,5 \\ \\ 2)..7-4,5=2,5 \\ \\ 3)..3 \frac{1}{6}* \frac{3}{19}= \frac{19}{6}* \frac{3}{19}=0,5 \\ \\ 4)..2,5+0,5=3 \\ \\ 5)..3: \frac{2}{3}=3*1,5=4,5 \\ \\ 6)..4,5- \frac{2}{3}= \frac{27}{6}- \frac{4}{6}= \frac{23}{6}=3 \frac{5}{6}$