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 0.85*42X+0.15*15X = 27500*0.5 .
Question type: Equation
Solution:Original question:
The equation is transformed into :
The equation is transformed into :
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
Convert the result to decimal form :
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation 0.85*42X+0.15*15X = 27500*0.5 .
Question type: Equation
Solution:Original question:
17 20 | × | 42 | X | + | 3 20 | × | 15 | X | = | 27500 | × | 1 2 |
| Left side of the equation = | 357 10 | X | + | 9 4 | X |
| = | 759 20 | X |
759 20 | X | = | 27500 | × | 1 2 |
| Right side of the equation = | 13750 |
759 20 | X | = | 13750 |
The coefficient of the unknown number is reduced to 1 :
| X | = | 13750 | ÷ | 759 20 |
| = | 13750 | × | 20 759 |
| = | 1250 | × | 20 69 |
We obtained :
| X | = | 25000 69 |
Convert the result to decimal form :
| X | = | 362.318841 |