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電子課本網(wǎng) 第73頁(yè)

第73頁(yè)

信息發(fā)布者:
0.84
10
2
3
0.1
5
0.9
??$\frac {1}{2}$??
2.8
??$ \frac {3}{4}$??
4
??$\frac {4}{9}$??
4.6
??$\frac {4}{5}$??
0.25
??$\frac {1}{6}$??
24.05
24050 
2.405
??$\frac {7}{10}$??
??$\frac {6}{5}$??
??$\frac {1}{5}$??
4
=
37
370
3.7
??$\begin{aligned}解:1.6x&=8\\x&=8÷1.6\\x&=5\end{aligned}$??
??$\begin{aligned}解:\frac {8}{9}x&=\frac {23}{8}\\x&=\frac {23}{8}×\frac {9}{8}\\x&=\frac {207}{64}\end{aligned}$??
??$\begin{aligned}解:\frac {8}{10}x+\frac {5}{10}x&=1\\\frac {13}{10}x&=1\\x&=1×\frac {10}{13}\\x&=\frac {10}{13}\end{aligned}$??