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第37頁

信息發(fā)布者：
$\frac{1}{4}$
$1\frac{1}{28}$
$\frac{11}{24}$
$\frac{1}{2}$
$\frac{5}{18}$
$2\frac{1}{5}$
$\frac{2}{3}$
$1\frac{7}{11}$
$\begin{aligned}解：x&=\frac {2}{3}-\frac {1}{9}\\x&=\frac {5}{9}\end{aligned}$
$\begin{aligned}解：x&=\frac {5}{6}+\frac {5}{8}\\x&=\frac {35}{24}\end{aligned}$
$\begin{aligned}解：5x&=\frac {3}{8}+\frac {5}{8}\\5x&=1\\x&=0.2\end{aligned}$
$\begin{aligned}解：x+\frac {1}{5}&=\frac {2}{3}\\x&=\frac {7}{15}\end{aligned}$
?$=\frac {7}{8}+\frac {6}{8}+\frac {1}{3}$?
?$=\frac {13}{8}+\frac {1}{3}$?
?$=\frac {47}{24}$?
?$=\frac {5}{6}-\frac {8}{15}$?
?$=\frac {3}{10}$?
?$=5-(\frac {5}{11}+\frac {17}{11})$?
?$=5-2$?
?$=3$?
?$=(\frac {23}{15}+\frac {7}{15})-(\frac {7}{12}+\frac {5}{12})$?
?$=2-1$?
?$=1$?
?$=\frac {10}{21}+\frac {11}{21}-1$?
?$=1-1$?
?$=0$?
?$=(\frac {2}{3}+\frac {1}{3})-(\frac {5}{12}+\frac {7}{12})$?
?$=1-1$?
?$=0$?
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