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第82页

信息发布者：

$1\frac{4}{7}$

$\frac{11}{15}$

$1\frac{1}{5}$

$\frac{2}{9}$

$\frac{3}{16}$

$1\frac{1}{6}$

$\frac{2}{3}$

$\begin {aligned}解：x&=\frac {3}{2}-\frac {2}{5}\\x &=\frac {11}{10}\end {aligned}$

$\begin {aligned}解：x&=\frac {3}{8}+\frac {5}{12}\\x &=\frac {19}{24}\end {aligned}$

$\begin {aligned}解：x&=\frac {11}{12}-\frac {3}{5}\\x &=\frac {19}{60}\end {aligned}$

$\begin {aligned}解：x&=\frac {2}{3}-\frac {1}{5}\\x &=\frac {7}{15}\end {aligned}$

$\begin {aligned}解：x&=1-\frac {1}{4}\\x &= \frac {3}{4}\end {aligned}$

$\begin {aligned}解：x&=\frac {2}{3}+\frac {1}{5}-\frac {4}{5}\\x &=\frac {13}{15}-\frac {4}{5}\\x &=\frac {1}{15}\end {aligned}$

$=\frac {29}{24}+\frac {3}{4}$

$=\frac {47}{24}$

$=\frac {33}{50}-\frac {1}{5}$

$=\frac {23}{50}$

$=\frac {29}{24}-\frac {7}{16}$

$=\frac {37}{48}$

$=\frac {14}{9}-\frac {1}{2}$

$=\frac {19}{18}$

$=1+\frac {8}{9}$

$=1\frac 89$

$=(\frac {19}{11}-\frac {8}{11})+\frac {2}{3}$

$=1+\frac {2}{3}$

$=1\frac 23$

$=\frac {13}{12}-1$

$=\frac {1}{12}$

$=(\frac {6}{13}+\frac {7}{13})-(\frac {3}{7}+\frac {4}{7})$

$=1-1$

$=0$