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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation （x－20）×0.8 = 0 .
Question type: Equation
Solution:Original question:
Remove the bracket on the left of the equation:
The equation is transformed into :
Transposition :
Combine the items on the right of the equation:
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation （x－20）×0.8 = 0 .
Question type: Equation
Solution:Original question:
| ( | x | − | 20 | ) | × | 4 5 | = | 0 |
| Left side of the equation = | x | × | 4 5 | − | 20 | × | 4 5 |
| = | x | × | 4 5 | − | 16 |
4 5 | x | − | 16 | = | 0 |
Transposition :
4 5 | x | = | 0 | + | 16 |
Combine the items on the right of the equation:
4 5 | x | = | 16 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 16 | ÷ | 4 5 |
| = | 16 | × | 5 4 |
| = | 4 | × | 5 |
We obtained :
| x | = | 20 |