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Solution inequality：
Directly input the univariate inequality (that is, the inequality containing only one variable), set the angular unit (radian or angle) of the trigonometric function, and click the "Next" button to obtain the solution set of the inequality.
It supports mathematical functions (including trigonometric functions).
Directly input the univariate inequality (that is, the inequality containing only one variable), set the angular unit (radian or angle) of the trigonometric function, and click the "Next" button to obtain the solution set of the inequality.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Inequality Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation x/(x+1600)*100% = 20% .
Question type: Equation
Solution:Original question:
| x | ÷ | ( | x | + | 1600 | ) | × | 100 100 | = | 20 100 |
| Multiply both sides of the equation by: | ( | x | + | 1600 | ) |
| x | × | 100 100 | = | 20 100 | ( | x | + | 1600 | ) |
| x | × | 100 100 | = | 20 100 | x | + | 20 100 | × | 1600 |
| x | × | 100 100 | = | 20 100 | x | + | 320 |
Transposition :
100 100 | x | − | 20 100 | x | = | 320 |
Combine the items on the left of the equation:
4 5 | x | = | 320 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 320 | ÷ | 4 5 |
| = | 320 | × | 5 4 |
| = | 80 | × | 5 |
We obtained :
| x | = | 400 |