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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*9 = 21 .
Question type: Equation
Solution:Original question:
| X | × | 9 | = | 21 |
The coefficient of the unknown number is reduced to 1 :
| X | = | 21 | ÷ | 9 |
| = | 21 | × | 1 9 |
| = | 7 | × | 1 3 |
We obtained :
| X | = | 7 3 |
Convert the result to decimal form :
| X | = | 2.333333 |