Question

Помогите решить 17.2, 17.3 зарание спасибо

Answer 1

$17.2$
Простите, но только номер 17.2

$\frac{4-3,5*(2 \frac{1}{7}-1 \frac{1}{5}) }{0,16x} = \frac{3 \frac{2}{7}- \frac{3}{14}: \frac{1}{6} }{ 43\frac{23}{84}-42 \frac{49}{60} }$$=1$

$1)\ 2 \frac{1}{7}-1 \frac{1}{5}= \frac{15}{7}- \frac{6}{5}= \frac{75-42}{35}= \frac{33}{35}$

$2) 3,5* \frac{33}{35}= \frac{7}{2}* \frac{33}{35}= \frac{33}{10}$

$3)\ 4- \frac{33}{10}= \frac{40-33}{10}= \frac{7}{10}$

$4)\ \frac{7}{10}:0,16x= \frac{7}{10}* \frac{25}{4}x= \frac{35}{8}x$

$5)\ \frac{3}{14}: \frac{1}{6}= \frac{3}{14}* \frac{6}{1}= \frac{18}{14}= \frac{9}{7}$

$6)\ 3 \frac{2}{7}- \frac{9}{7}= \frac{23}{7}- \frac{9}{7}= \frac{14}{7}=2$

$7)\ 43 \frac{23}{84}-42 \frac{49}{60}= \frac{3635}{84}- \frac{2569}{60}= \frac{18175-17983}{420}= \frac{192}{420}= \frac{32}{70}= \frac{16}{35}$

$8)\ 2: \frac{16}{35}=2* \frac{35}{16}= \frac{35}{8}$

$9) \frac{35}{8}x= \frac{35}{8}$
$x=1$

Answer 2

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