Overview: 2 questions will be solved this time.Among them
☆2 equations
[ 1/2 Equation]
Work: Find the solution of equation (155*x+34.4*26)/(155+26) = 22.7 .
Question type: Equation
Solution:Original question:| | ( | 155 | x | + | 172 5 | × | 26 | ) | ÷ | ( | 155 | + | 26 | ) | = | 227 10 |
| Multiply both sides of the equation by: | ( | 155 | + | 26 | ) |
| | ( | 155 | x | + | 172 5 | × | 26 | ) | = | 227 10 | ( | 155 | + | 26 | ) |
Remove a bracket on the left of the equation::
| | 155 | x | + | 172 5 | × | 26 | = | 227 10 | ( | 155 | + | 26 | ) |
Remove a bracket on the right of the equation::
| | 155 | x | + | 172 5 | × | 26 | = | 227 10 | × | 155 | + | 227 10 | × | 26 |
The equation is reduced to :
| | 155 | x | + | 4472 5 | = | 7037 2 | + | 2951 5 |
The equation is reduced to :
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 :
[ 2/2 Equation]
Work: Find the solution of equation (155*x+39.5*31)/(155+31) = 26.4 .
Question type: Equation
Solution:Original question:| | ( | 155 | x | + | 79 2 | × | 31 | ) | ÷ | ( | 155 | + | 31 | ) | = | 132 5 |
| Multiply both sides of the equation by: | ( | 155 | + | 31 | ) |
| | ( | 155 | x | + | 79 2 | × | 31 | ) | = | 132 5 | ( | 155 | + | 31 | ) |
Remove a bracket on the left of the equation::
| | 155 | x | + | 79 2 | × | 31 | = | 132 5 | ( | 155 | + | 31 | ) |
Remove a bracket on the right of the equation::
| | 155 | x | + | 79 2 | × | 31 | = | 132 5 | × | 155 | + | 132 5 | × | 31 |
The equation is reduced to :
| | 155 | x | + | 2449 2 | = | 4092 | + | 4092 5 |
The equation is reduced to :
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.
By reducing fraction, we can get:
Convert the result to decimal form :
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