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On line Solution of Monovariate Equation：
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Current location：Equations > Monovariate Equation > The history of univariate equation calculation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation （0.2-x）×（0.069-x）/（0.4-x）×（0.239-x） = 1 .
Question type: Equation
Solution:Original question:
| ( | 1 5 | − | x | ) | ( | 69 1000 | − | x | ) | ÷ | ( | 2 5 | − | x | ) | × | ( | 239 1000 | − | x | ) | = | 1 |
| Multiply both sides of the equation by: | ( | 2 5 | − | x | ) |
| ( | 1 5 | − | x | ) | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 1 | ( | 2 5 | − | x | ) |
1 5 | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 1 | ( | 2 5 | − | x | ) |
1 5 | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 1 | × | 2 5 | − | 1 | x |
1 5 | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
1 5 | × | 69 1000 | ( | 239 1000 | − | x | ) | − | 1 5 | x | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
69 5000 | ( | 239 1000 | − | x | ) | − | 1 5 | x | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
69 5000 | × | 239 1000 | − | 69 5000 | x | − | 1 5 | x | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 69 5000 | x | − | 1 5 | x | ( | 239 1000 | − | x | ) | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 69 5000 | x | − | 1 5 | x | × | 239 1000 | + | 1 5 | x | x | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 69 5000 | x | − | 239 5000 | x | + | 1 5 | x | x | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 77 1250 | x | + | 1 5 | x | x | − | x | ( | 69 1000 | − | x | ) | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 77 1250 | x | + | 1 5 | x | x | − | x | × | 69 1000 | ( | 239 1000 | − | x | ) | + | x | x | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 77 1250 | x | + | 1 5 | x | x | − | x | × | 69 1000 | × | 239 1000 | + | x | × | 69 1000 | x | = | 2 5 | − | 1 | x |
16491 5000000 | − | 77 1250 | x | + | 1 5 | x | x | − | x | × | 16491 1000000 | + | x | × | 69 1000 | x | + | x | = | 2 5 | − | 1 | x |
16491 5000000 | − | 78091 1000000 | x | + | 1 5 | x | x | + | x | × | 69 1000 | x | + | x | x | ( | 239 1000 | − | x | ) | = | 2 5 | − | 1 | x |
16491 5000000 | − | 78091 1000000 | x | + | 1 5 | x | x | + | x | × | 69 1000 | x | + | x | x | × | 239 1000 | = | 2 5 | − | 1 | x |
The solution of the equation:
x1≈-0.933935 , keep 6 decimal places
x2≈0.412698 , keep 6 decimal places
x3≈1.029237 , keep 6 decimal places
There are 3 solution(s).
解程的详细方法请参阅：《方程的解法》