亚洲激情+欧美激情,无码任你躁久久久久久,我的极品美女老婆,性欧美牲交在线视频,亚洲av高清在线一区二区三区

電子課本網(wǎng) › 第74頁

第74頁

信息發(fā)布者：
>
=
<
<
=
?$=\frac {1}{24}+\frac {3}{4}$?
?$=\frac {19}{24}$?
?$=\frac {7}{8}-\frac {3}{10}$?
?$=\frac {23}{40}$?
?$=\frac {7}{24}+\frac {3}{4}$?
?$=\frac {25}{24}$?
?$=\frac {4}{3}-\frac {3}{4}$?
?$=\frac {7}{12}$?
$\begin {aligned}解：x&=\frac {2}{3}+\frac {1}{3}\\x &=1\end {aligned}$
?$\begin {aligned}解：4x&=1\\x &=0.25\end {aligned}$?
$\begin {aligned}解：x&=\frac {1}{4}+\frac {2}{7}-\frac {3}{14}\\x &=\frac {15}{28}-\frac {3}{14}\\x &=\frac {9}{28}\end {aligned}$
$\begin {aligned}解：x&=\frac {4}{5}-\frac {1}{5}\\x &=\frac {3}{5}\end {aligned}$
?$\frac {2}{5}$? + ?$\frac {1}{4}$? + ?$\frac {1}{4}$?=?$\frac {9}{10}$? (米)
答：周長是?$\frac {9}{10}$?米。
?$\frac {3}{4}$?-?$\frac {1}{3}$? + ?$\frac {3}{4}$?=?$\frac {7}{6}$? (噸)
答：一共?$\frac {7}{6}$?噸。
?$\frac {1}{3}$? + ?$\frac {1}{9}$? + ?$\frac {1}{3}$?=?$\frac {7}{9}$?
答：一共看了全書的?$\frac {7}{9}。$?
C
上一頁 下一頁