7．解方程．
| x÷$\frac{5}{6}$=$\frac{3}{4}$ | 8x=$\frac{4}{7}$ | $\frac{2}{3}$x=$\frac{1}{12}$ |
| $\frac{5}{8}$x=1 | 1.5x=31.5 | 5x=46 |
6．计算，写出必要的计算过程．
0 159824 159832 159838 159842 159848 159850 159854 159860 159862 159868 159874 159878 159880 159884 159890 159892 159898 159902 159904 159908 159910 159914 159916 159918 159919 159920 159922 159923 159924 159926 159928 159932 159934 159938 159940 159944 159950 159952 159958 159962 159964 159968 159974 159980 159982 159988 159992 159994 160000 160004 160010 160018 199269
| $\frac{5}{6}$×30= | $\frac{3}{10}$÷$\frac{1}{5}$= | $\frac{6}{37}$÷6= | $\frac{4}{11}$×$\frac{77}{36}$= | $\frac{7}{12}$÷$\frac{4}{7}$= |
| $\frac{7}{24}$×$\frac{6}{35}$= | 20×$\frac{4}{5}$= | $\frac{1}{5}$÷15= | $\frac{13}{19}$÷$\frac{19}{13}$= | 12×$\frac{3}{7}$= |