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72頁(yè)

第72頁(yè)

信息發(fā)布者：
?$1\frac{1}{4}$?
?$\frac{1}{10}$?
?$\frac{2}{5}$?
?$1\frac{1}{4}$?
?$解：\frac {9}{5}x=\frac {3}{10}$?
          ?$x=\frac {1}{6}$?
?$解：\frac {2}{9}x=\frac {5}{6}$?
          ?$x=\frac {15}{4}$?
?$解：\frac {5}{4}x=\frac {11}{6}$?
          ?$x=\frac {22}{15}$?
?$=\frac {3}{7}×\frac {4}{5}+\frac {4}{7}×\frac {5}{4}$?
?$=(\frac {3}{7}+\frac {4}{7})×\frac {4}{5}$?
?$=1×\frac {4}{5}$?
?$=\frac {4}{5}$?

?$=1-\frac {2}{3}÷\frac {2}{3}$?
?$=1-1$?
?$=0$?

?$=\frac {3}{5}÷\frac {3}{2}×\frac {12}{7}$?
?$=\frac {2}{5}×\frac {12}{7}$?
?$=\frac {24}{35}$?

$?6×\frac{2}{5}÷\frac{3}{10}=8(千米)$
$答:平均每小時(shí)跑8千米。$
?$15×\frac {3}{5}÷6=1.5(千克)$?
?$答：每個(gè)瓶子裝1.5千克油。$?

?$\frac {175}{6}$?
?$\frac {11}{4}$?
上一頁(yè) 下一頁(yè)