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第59頁

信息發(fā)布者：

 $\begin{aligned}&17\times\frac{5}{6}+17\div6\\=&17\times\frac{5}{6}+17\times\frac{1}{6}\\=&17\times(\frac{5}{6}+\frac{1}{6})\\=&17\times1\\=&17\end{aligned}$

$\begin{aligned}&(6\frac{2}{5}+2\frac{2}{15})\div(\frac{4}{5}+\frac{4}{15})\\=&(\frac{32}{5}+\frac{32}{15})\div(\frac{12}{15}+\frac{4}{15})\\=&(\frac{96}{15}+\frac{32}{15})\div\frac{16}{15}\\=&\frac{128}{15}\div\frac{16}{15}\\=&\frac{128}{15}\times\frac{15}{16}\\=&8\end{aligned}$

?$解:\frac{11}{12}x=33$?

?$x=33×\frac{12}{11}$?

?$x=36$?

?$解:7x-\frac{3}{2}=\frac{3}{5}$?
               ?$7x=\frac{21}{10}$?
                 ?$x=\frac{3}{10}$?

 $\begin{aligned}&(\frac{1}{2}\times\frac{1}{5}+\frac{1}{2}\times1+\frac{1}{5}\times1)\times2\\=&(\frac{1}{10}+\frac{1}{2}+\frac{1}{5})\times2\\=&(\frac{1}{10}+\frac{5}{10}+\frac{2}{10})\times2\\=&\frac{8}{10}\times2\\=&\frac{8}{5}(m^{2})\end{aligned}$

?$(\frac{1}{10}+\frac{1}{5})×3=\frac{9}{10}(千克)$?
?$答：一共重\frac {9}{10}千克。$?

?$15×\frac{1}{5}×45=135(元)$?
?$135÷(\frac{1}{10}×30)=45(袋)$?
?$答：應(yīng)付135元,可以買45袋。$?

$\frac{1}{35}$

$3$

?$600÷(\frac{2}{3}+\frac{3}{4}-1)=1440(米) $?
?$答：A、B兩地相距1440米。$?

$2a$

?$蘋果:120÷(\frac{7}{6}-\frac{9}{10})=450(千克)\ $?
?$梨:450÷\frac{6}{7}=525(千克)\ $?
?$答：這兩種水果原來各有450千克,525千克。$?

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第59頁