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61頁(yè)

第61頁(yè)

信息發(fā)布者：
2320
6.37
52
40
1.6
?$2\frac 1{12}$?
$2\frac{2}{7}$
1
$\frac{4}{9}$
90
$\frac{1}{3}$
?$\frac {14}{15}$?
=900-212
=688
=2.5×0.4×1.8
=1×1.8
=1.8
?$=\frac {7}{10}+\frac {3}{5}$?
?$=\frac {13}{10}$?
?$=\frac {4}{5}×(3.5+5.5+1)$?
?$=\frac {4}{5}×10$?
?$=8$?
?$=(4.56+3.44)-(\frac {4}{7}+\frac {3}{7})$?
?$=8-1$?
?$=7$?
=9.24÷(1.5×0.2)
=9.24÷0.3
=30.8
$\begin{aligned}解：0.68x&=1.7\\x&=2.5\end{aligned}$
$\begin{aligned}解：\frac {2}{9}x&=10×\frac {4}{5}\\\frac {2}{9}x&=8\\x&=36\end{aligned}$
$\begin{aligned}解：5x+3&=100\\5x&=97\\x&=19.4\end{aligned}$
上一頁(yè) 下一頁(yè)