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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 84900 = x+x*1.05+x*1.05*1.05 .
Question type: Equation
Solution:Original question:
| 84900 | = | x | + | x | × | 21 20 | + | x | × | 21 20 | × | 21 20 |
| Right side of the equation = | x | + | x | × | 21 20 | + | x | × | 441 400 |
| = | 1261 400 | x |
| 84900 | = | 1261 400 | x |
Transposition :
| - | 1261 400 | x | = | - | 84900 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
| 84900 | = | 1261 400 | 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 :
1261 400 | x | = | 84900 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 84900 | ÷ | 1261 400 |
| = | 84900 | × | 400 1261 |
We obtained :
| x | = | 33960000 1261 |
Convert the result to decimal form :
| x | = | 26931.007137 |