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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 0.7 = (0.33×10.97+n×9.95)/(0.33+n) .
Question type: Equation
Solution:Original question:
7 10 | = | ( | 33 100 | × | 1097 100 | + | n | × | 199 20 | ) | ÷ | ( | 33 100 | + | n | ) |
| Multiply both sides of the equation by: | ( | 33 100 | + | n | ) |
7 10 | ( | 33 100 | + | n | ) | = | ( | 33 100 | × | 1097 100 | + | n | × | 199 20 | ) |
7 10 | × | 33 100 | + | 7 10 | n | = | ( | 33 100 | × | 1097 100 | + | n | × | 199 20 | ) |
7 10 | × | 33 100 | + | 7 10 | n | = | 33 100 | × | 1097 100 | + | n | × | 199 20 |
231 1000 | + | 7 10 | n | = | 36201 10000 | + | n | × | 199 20 |
Transposition :
7 10 | n | − | 199 20 | n | = | 36201 10000 | − | 231 1000 |
Combine the items on the left of the equation:
| - | 37 4 | n | = | 36201 10000 | − | 231 1000 |
Combine the items on the right of the equation:
| - | 37 4 | n | = | 33891 10000 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
| - | 33891 10000 | = | 37 4 | n |
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 :
37 4 | n | = | - | 33891 10000 |
The coefficient of the unknown number is reduced to 1 :
| n | = | - | 33891 10000 | ÷ | 37 4 |
| = | - | 33891 10000 | × | 4 37 |
| = | - | 33891 2500 | × | 1 37 |
We obtained :
| n | = | - | 33891 92500 |
Convert the result to decimal form :
| n | = | - 0.366389 |