Equations
Unfold
Math OP
Fold
Linear algebra
Unfold
Mathematical calculation：
Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
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*0.77 = 3.98 .
Question type: Equation
Solution:Original question:
| X | × | 77 100 | = | 199 50 |
The coefficient of the unknown number is reduced to 1 :
| X | = | 199 50 | ÷ | 77 100 |
| = | 199 50 | × | 100 77 |
| = | 199 | × | 2 77 |
We obtained :
| X | = | 398 77 |
Convert the result to decimal form :
| X | = | 5.168831 |