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第19页

信息发布者：

$\frac{2}{15}$

$\frac{1}{16}$

$81$

$\frac{4}{5}$

$\frac{11}{8}$

$\frac{16}{3}$

$4$

$\frac{27}{8}$

$45\times\frac{4}{5}\times\frac{2}{9}$

 $=36\times\frac{2}{9}$

 $=8$

 $\frac{10}{21}\div\frac{5}{6}\times\frac{2}{3}$

 $=\frac{10}{21}\times\frac{6}{5}\times\frac{2}{3}$

 $=\frac{4}{7}\times\frac{2}{3}$

 $=\frac{8}{21}$

 $\frac{2}{3}\times\frac{1}{10}\div\frac{8}{15}$

 $=\frac{1}{15}\div\frac{8}{15}$

 $=\frac{1}{15}\times\frac{15}{8}$

 $=\frac{1}{8}$

 $24\times\frac{3}{8}\div\frac{15}{4}$

 $=9\div\frac{15}{4}$

 $=9\times\frac{4}{15}$

 $=\frac{12}{5}$

 $\frac{15}{16}\div\frac{5}{6}\div\frac{3}{8}$

 $=\frac{15}{16}\times\frac{6}{5}\div\frac{3}{8}$

 $=\frac{9}{8}\div\frac{3}{8}$

 $=\frac{9}{8}\times\frac{8}{3}$

 $=3$

 $\frac{16}{9}\div\frac{8}{11}\times\frac{3}{22}$

 $=\frac{16}{9}\times\frac{11}{8}\times\frac{3}{22}$

 $=\frac{22}{9}\times\frac{3}{22}$

 $=\frac{1}{3}$

 解：$\frac{2}{3}x=\frac{4}{5}$

 $x=\frac{4}{5}\div\frac{2}{3}$

 $x=\frac{4}{5}\times\frac{3}{2}$

 $x=\frac{6}{5}$

 解：$\frac{6}{5}x\div\frac{1}{2}=6$

 $\frac{6}{5}x=6\times\frac{1}{2}$

 $\frac{6}{5}x=3$

 $x=3\div\frac{6}{5}$

 $x=3\times\frac{5}{6}$

 $x=\frac{5}{2}$

 解：$\frac{2}{3}x-\frac{1}{4}x=\frac{5}{18}$

 $\frac{8}{12}x-\frac{3}{12}x=\frac{5}{18}$

 $\frac{5}{12}x=\frac{5}{18}$

 $x=\frac{5}{18}\div\frac{5}{12}$

 $x=\frac{5}{18}\times\frac{12}{5}$

 $x=\frac{2}{3}$

$10$

$16$

$25$

$35$

$600$

$5400$

$7.02$