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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 (99+x)/(162+x) = 0.618 .
Question type: Equation
Solution:Original question:
| ( | 99 | + | x | ) | ÷ | ( | 162 | + | x | ) | = | 309 500 |
| Multiply both sides of the equation by: | ( | 162 | + | x | ) |
| ( | 99 | + | x | ) | = | 309 500 | ( | 162 | + | x | ) |
| 99 | + | x | = | 309 500 | ( | 162 | + | x | ) |
| 99 | + | x | = | 309 500 | × | 162 | + | 309 500 | x |
| 99 | + | x | = | 25029 250 | + | 309 500 | x |
Transposition :
| x | − | 309 500 | x | = | 25029 250 | − | 99 |
Combine the items on the left of the equation:
191 500 | x | = | 25029 250 | − | 99 |
Combine the items on the right of the equation:
191 500 | x | = | 279 250 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 279 250 | ÷ | 191 500 |
| = | 279 250 | × | 500 191 |
| = | 279 | × | 2 191 |
We obtained :
| x | = | 558 191 |
Convert the result to decimal form :
| x | = | 2.921466 |