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Solution inequality：
Directly input the univariate inequality (that is, the inequality containing only one variable), set the angular unit (radian or angle) of the trigonometric function, and click the "Next" button to obtain the solution set of the inequality.
It supports mathematical functions (including trigonometric functions).
Directly input the univariate inequality (that is, the inequality containing only one variable), set the angular unit (radian or angle) of the trigonometric function, and click the "Next" button to obtain the solution set of the inequality.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Inequality Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation 1/312.2-1/（80-x） = 1/88-1/（390-x） .
Question type: Equation
Solution:Original question:
| 1 | ÷ | 1561 5 | − | 1 | ÷ | ( | 80 | − | x | ) | = | 1 | ÷ | 88 | − | 1 | ÷ | ( | 390 | − | x | ) |
| Multiply both sides of the equation by: | ( | 80 | − | x | ) | , | ( | 390 | − | x | ) |
| 1 | ÷ | 1561 5 | × | ( | 80 | − | x | ) | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 1 | ÷ | 88 | × | ( | 80 | − | x | ) | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
| 1 | ÷ | 1561 5 | × | 80 | ( | 390 | − | x | ) | − | 1 | ÷ | 1561 5 | × | x | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 1 | ÷ | 88 | × | ( | 80 | − | x | ) | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
| 1 | ÷ | 1561 5 | × | 80 | ( | 390 | − | x | ) | − | 1 | ÷ | 1561 5 | × | x | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 1 | ÷ | 88 | × | 80 | ( | 390 | − | x | ) | − | 1 | ÷ | 88 | × | x | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
400 1561 | ( | 390 | − | x | ) | − | 5 1561 | x | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 10 11 | ( | 390 | − | x | ) | − | 1 88 | x | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
400 1561 | × | 390 | − | 400 1561 | x | − | 5 1561 | x | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 10 11 | ( | 390 | − | x | ) | − | 1 88 | x | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
400 1561 | × | 390 | − | 400 1561 | x | − | 5 1561 | x | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 10 11 | × | 390 | − | 10 11 | x | − | 1 88 | x | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 400 1561 | x | − | 5 1561 | x | ( | 390 | − | x | ) | − | 1 | ( | 390 | − | x | ) | = | 3900 11 | − | 10 11 | x | − | 1 88 | x | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 400 1561 | x | − | 5 1561 | x | × | 390 | + | 5 1561 | x | x | − | 1 | ( | 390 | − | x | ) | = | 3900 11 | − | 10 11 | x | − | 1 88 | x | ( | 390 | − | x | ) | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 400 1561 | x | − | 5 1561 | x | × | 390 | + | 5 1561 | x | x | − | 1 | ( | 390 | − | x | ) | = | 3900 11 | − | 10 11 | x | − | 1 88 | x | × | 390 | + | 1 88 | x | x | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 400 1561 | x | − | 1950 1561 | x | + | 5 1561 | x | x | − | 1 | ( | 390 | − | x | ) | = | 3900 11 | − | 10 11 | x | − | 195 44 | x | + | 1 88 | x | x | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 2350 1561 | x | + | 5 1561 | x | x | − | 1 | ( | 390 | − | x | ) | = | 3900 11 | − | 235 44 | x | + | 1 88 | x | x | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 2350 1561 | x | + | 5 1561 | x | x | − | 1 | × | 390 | + | 1 | x | = | 3900 11 | − | 235 44 | x | + | 1 88 | x | x | − | 1 | ( | 80 | − | x | ) |
156000 1561 | − | 2350 1561 | x | + | 5 1561 | x | x | − | 1 | × | 390 | + | 1 | x | = | 3900 11 | − | 235 44 | x | + | 1 88 | x | x | − | 1 | × | 80 | + | 1 | x |
156000 1561 | − | 2350 1561 | x | + | 5 1561 | x | x | − | 390 | + | 1 | x | = | 3900 11 | − | 235 44 | x | + | 1 88 | x | x | − | 80 | + | 1 | x |
| - | 452790 1561 | − | 789 1561 | x | + | 5 1561 | x | x | = | 3020 11 | − | 191 44 | x | + | 1 88 | x | x |
There are 0 solution(s).
解程的详细方法请参阅：《方程的解法》