電子課本網(wǎng) › 第82頁

第82頁

信息發(fā)布者：

A

B

C

1

$1\frac{4}{7}$

$\frac{11}{15}$

$1\frac{1}{5}$

$\frac{2}{9}$

$\frac{3}{16}$

$1\frac{1}{6}$

$\frac{2}{3}$

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

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

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

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

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

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

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

?$=\frac {47}{24}$?

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

?$=\frac {23}{50}$?

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

?$=\frac {37}{48}$?

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

?$=\frac {19}{18}$?

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

?$=1\frac 89$?

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

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

?$=1\frac 23$?

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

?$=\frac {1}{12}$?

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

?$=1-1$?

?$=0$?

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