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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 = Q×7.15-（Q×2.87+2858.73）-Q×0.08 .
Question type: Equation
Solution:Original question:
The equation is transformed into :
Remove the bracket on the right of the equation:
The equation is transformed into :
Transposition :
Combine the items on the right of the equation:
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
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 :
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
Convert the result to decimal form :
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation 0 = Q×7.15-（Q×2.87+2858.73）-Q×0.08 .
Question type: Equation
Solution:Original question:
| 0 | = | Q | × | 143 20 | − | ( | Q | × | 287 100 | + | 285873 100 | ) | − | Q | × | 2 25 |
| Right side of the equation = | 707 100 | Q | − | ( | Q | × | 287 100 | + | 285873 100 | ) |
| 0 | = | 707 100 | Q | − | ( | Q | × | 287 100 | + | 285873 100 | ) |
| Right side of the equation = | 707 100 | Q | − | Q | × | 287 100 | − | 285873 100 |
| = | 21 5 | Q | − | 285873 100 |
| 0 | = | 21 5 | Q | − | 285873 100 |
Transposition :
| - | 21 5 | Q | = | - | 285873 100 | − | 0 |
Combine the items on the right of the equation:
| - | 21 5 | Q | = | - | 285873 100 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
285873 100 | = | 21 5 | Q |
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 :
21 5 | Q | = | 285873 100 |
The coefficient of the unknown number is reduced to 1 :
| Q | = | 285873 100 | ÷ | 21 5 |
| = | 285873 100 | × | 5 21 |
| = | 13613 20 | × | 1 |
We obtained :
| Q | = | 13613 20 |
Convert the result to decimal form :
| Q | = | 680.65 |