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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 (15-x)/(15-28) = 0.3077 .
Question type: Equation
Solution:Original question:
| ( | 15 | − | x | ) | ÷ | ( | 15 | − | 28 | ) | = | 3077 10000 |
| Multiply both sides of the equation by: | ( | 15 | − | 28 | ) |
| ( | 15 | − | x | ) | = | 3077 10000 | ( | 15 | − | 28 | ) |
| 15 | − | x | = | 3077 10000 | ( | 15 | − | 28 | ) |
| 15 | − | x | = | 3077 10000 | × | 15 | − | 3077 10000 | × | 28 |
| 15 | − | x | = | 9231 2000 | − | 21539 2500 |
| 15 | − | x | = | - | 40001 10000 |
Transposition :
| - | x | = | - | 40001 10000 | − | 15 |
Combine the items on the right of the equation:
| - | x | = | - | 190001 10000 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
190001 10000 | = | x |
If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :
| x | = | 190001 10000 |
This is the solution of the equation.