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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 9*129.9-9*x = 21*118.1364-21*x .
Question type: Equation
Solution:Original question:
| 9 | × | 1299 10 | − | 9 | x | = | 21 | × | 295341 2500 | − | 21 | x |
| Left side of the equation = | 11691 10 | − | 9 | x |
11691 10 | − | 9 | x | = | 21 | × | 295341 2500 | − | 21 | x |
| Right side of the equation = | 6202161 2500 | − | 21 | x |
11691 10 | − | 9 | x | = | 6202161 2500 | − | 21 | x |
Transposition :
| - | 9 | x | + | 21 | x | = | 6202161 2500 | − | 11691 10 |
Combine the items on the left of the equation:
| 12 | x | = | 6202161 2500 | − | 11691 10 |
Combine the items on the right of the equation:
| 12 | x | = | 3279411 2500 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 3279411 2500 | ÷ | 12 |
| = | 3279411 2500 | × | 1 12 |
| = | 1093137 2500 | × | 1 4 |
We obtained :
| x | = | 1093137 10000 |
Convert the result to decimal form :
| x | = | 109.3137 |