第14页 - 通城学典课时作业本六年级数学苏教版江苏专用

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$ \begin{aligned}解：x×\frac {1}{4}&=\frac {7}{18}×3 \\ \frac {1}{4}x&=\frac {7}{6} \\ x&=\frac {14}{3} \\ \end{aligned}$

$ \begin{aligned}解：5x&=3 \\ x&=\frac {3}{5} \\ \end{aligned}$

$ \begin{aligned}解：\frac {7}{9}×\frac {3}{7}&=\frac {3}{4}x \\ \frac {3}{4}x&=\frac {1}{3} \\ x&=\frac {4}{9} \\ \end{aligned}$