Equations
Fold
Math OP
Unfold
Linear algebra
Unfold
On line Solution of Monovariate Equation：
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Current location：Equations > Monovariate Equation > The history of univariate equation calculation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation （144.5+441.5)/30*x+118.5/30*(x+15)+90/30*(x+30) = 995 .
Question type: Equation
Solution:Original question:
The equation is transformed into :
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.
Convert the result to decimal form :
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation （144.5+441.5)/30*x+118.5/30*(x+15)+90/30*(x+30) = 995 .
Question type: Equation
Solution:Original question:
| ( | 289 2 | + | 883 2 | ) | ÷ | 30 | × | x | + | 237 2 | ÷ | 30 | × | ( | x | + | 15 | ) | + | 90 | ÷ | 30 | × | ( | x | + | 30 | ) | = | 995 |
| Left side of the equation = | ( | 289 2 | + | 883 2 | ) | × | 1 30 | x | + | 79 20 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
| ( | 289 2 | + | 883 2 | ) | × | 1 30 | x | + | 79 20 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) | = | 995 |
| Left side of the equation = | 289 2 | × | 1 30 | x | + | 883 2 | × | 1 30 | x | + | 79 20 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
| = | 289 60 | x | + | 883 60 | x | + | 79 20 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
| = | 293 15 | x | + | 79 20 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
| = | 293 15 | x | + | 79 20 | x | + | 79 20 | × | 15 | + | 3 | ( | x | + | 30 | ) |
| = | 293 15 | x | + | 79 20 | x | + | 237 4 | + | 3 | ( | x | + | 30 | ) |
| = | 1409 60 | x | + | 237 4 | + | 3 | ( | x | + | 30 | ) |
| = | 1409 60 | x | + | 237 4 | + | 3 | x | + | 3 | × | 30 |
| = | 1409 60 | x | + | 237 4 | + | 3 | x | + | 90 |
| = | 1589 60 | x | + | 597 4 |
1589 60 | x | + | 597 4 | = | 995 |
Transposition :
1589 60 | x | = | 995 | − | 597 4 |
Combine the items on the right of the equation:
1589 60 | x | = | 3383 4 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 3383 4 | ÷ | 1589 60 |
| = | 3383 4 | × | 60 1589 |
| = | 3383 | × | 15 1589 |
We obtained :
| x | = | 50745 1589 |
Convert the result to decimal form :
| x | = | 31.935179 |