解方程.
| x-3.6=1.4 | 4x=15 | x+0.42=4.2 | x÷1.4=0.5. |
| 0.65×100=________; | 5.46÷100=________; | 3.4×1000=________; | 35.12÷100=________; |
| 0.086×100=________; | 62.5÷100=________; | 0.008×10=________; | 30.06÷100=________; |
| 90÷1000=________; | 6.47×10×100=________; | 32.6÷10÷100=________; | 8.02×100÷10=________. |