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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 99.4+x*0.0015 = 99.78-(39-x)*0.041 .
Question type: Equation
Solution:Original question:
497 5 | + | x | × | 3 2000 | = | 4989 50 | − | ( | 39 | − | x | ) | × | 41 1000 |
| Right side of the equation = | 4989 50 | − | 39 | × | 41 1000 | + | x | × | 41 1000 |
| = | 4989 50 | − | 1599 1000 | + | x | × | 41 1000 |
| = | 98181 1000 | + | 41 1000 | x |
497 5 | + | 3 2000 | x | = | 98181 1000 | + | 41 1000 | x |
Transposition :
3 2000 | x | − | 41 1000 | x | = | 98181 1000 | − | 497 5 |
Combine the items on the left of the equation:
| - | 79 2000 | x | = | 98181 1000 | − | 497 5 |
Combine the items on the right of the equation:
| - | 79 2000 | x | = | - | 1219 1000 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
1219 1000 | = | 79 2000 | 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 :
79 2000 | x | = | 1219 1000 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 1219 1000 | ÷ | 79 2000 |
| = | 1219 1000 | × | 2000 79 |
| = | 1219 | × | 2 79 |
We obtained :
| x | = | 2438 79 |
Convert the result to decimal form :
| x | = | 30.860759 |