在线解一元方程：
直接输入任意的一元方程，然后点击“下一步”按钮，即可获得方程的解。
它支持包含数学函数的方程。
直接输入任意的一元方程，然后点击“下一步”按钮，即可获得方程的解。
它支持包含数学函数的方程。
总述：本次共解1题。其中
☆方程1题
〖 1/1方程〗
作业：求方程 1/（d）+1/（d+1）+1/（d+4） = 1/（d+2） 的解.
题型：方程
解:原方程：
| 1 | ÷ | ( | d | ) | + | 1 | ÷ | ( | d | + | 1 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | = | 1 | ÷ | ( | d | + | 2 | ) |
| 方程两边同时乘以： | ( | d | ) | , | ( | d | + | 2 | ) |
| 1 | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 1 | ) | × | ( | d | ) | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | × | ( | d | ) | ( | d | + | 2 | ) | = | 1 | ( | d | ) |
| 1 | d | + | 1 | × | 2 | + | 1 | ÷ | ( | d | + | 1 | ) | × | ( | d | ) | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | × | ( | d | ) | ( | d | + | 2 | ) | = | 1 | ( | d | ) |
| 1 | d | + | 1 | × | 2 | + | 1 | ÷ | ( | d | + | 1 | ) | × | ( | d | ) | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | × | ( | d | ) | ( | d | + | 2 | ) | = | 1 | d |
| 1 | d | + | 2 | + | 1 | ÷ | ( | d | + | 1 | ) | × | ( | d | ) | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | × | ( | d | ) | ( | d | + | 2 | ) | = | 1 | d |
| 方程两边同时乘以： | ( | d | + | 1 | ) |
| 1 | d | ( | d | + | 1 | ) | + | 2 | ( | d | + | 1 | ) | + | 1 | ( | d | ) | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | × | ( | d | ) | ( | d | + | 2 | ) | = | 1 | d | ( | d | + | 1 | ) |
| 1 | d | d | + | 1 | d | × | 1 | + | 2 | ( | d | + | 1 | ) | + | 1 | ( | d | ) | ( | d | + | 2 | ) | + | 1 | = | 1 | d | ( | d | + | 1 | ) |
| 1 | d | d | + | 1 | d | × | 1 | + | 2 | ( | d | + | 1 | ) | + | 1 | ( | d | ) | ( | d | + | 2 | ) | + | 1 | = | 1 | d | d | + | 1 | d | × | 1 |
| 1 | d | d | + | 1 | d | + | 2 | ( | d | + | 1 | ) | + | 1 | ( | d | ) | ( | d | + | 2 | ) | + | 1 | ÷ | ( | d | + | 4 | ) | = | 1 | d | d | + | 1 | d |
| 方程两边同时乘以： | ( | d | + | 4 | ) |
| 1 | d | d | ( | d | + | 4 | ) | + | 1 | d | ( | d | + | 4 | ) | + | 2 | ( | d | + | 1 | ) | ( | d | + | 4 | ) | + | 1 | ( | d | ) | = | 1 | d | d | ( | d | + | 4 | ) | + | 1 | d | ( | d | + | 4 | ) |
| 1 | d | d | d | + | 1 | d | d | × | 4 | + | 1 | d | ( | d | + | 4 | ) | + | 2 | = | 1 | d | d | ( | d | + | 4 | ) | + | 1 | d | ( | d | + | 4 | ) |
| 1 | d | d | d | + | 1 | d | d | × | 4 | + | 1 | d | ( | d | + | 4 | ) | + | 2 | = | 1 | d | d | d | + | 1 | d | d | × | 4 | + | 1 | d | ( | d | + | 4 | ) |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | ( | d | + | 4 | ) | + | 2 | ( | d | + | 1 | ) | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | ( | d | + | 4 | ) |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 1 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | ( | d | + | 4 | ) |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 1 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 1 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 12 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 12 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
| 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 12 | d | = | 1 | d | d | d | + | 4 | d | d | + | 1 | d | d | + | 4 | d |
d≈-0.549460 ，保留6位小数
有 1个解。
解一元一次方程的详细方法请参阅：《一元一次方程的解法》
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