Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 0.2x+0.5x-3.6 = 2 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 7 10 | x | − | 18 5 |
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.
[ 2/6 Equation]
Work: Find the solution of equation 0.1x+0.4x-1.1 = 2.9 .
Question type: Equation
Solution:Original question:| | 1 10 | x | + | 2 5 | x | − | 11 10 | = | 29 10 |
| Left side of the equation = | 1 2 | x | − | 11 10 |
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.
[ 3/6 Equation]
Work: Find the solution of equation 0.5x-1.3 = 1.7+0.3x .
Question type: Equation
Solution:Original question:| | 1 2 | x | − | 13 10 | = | 17 10 | + | 3 10 | x |
Transposition :
| | 1 2 | x | − | 3 10 | x | = | 17 10 | + | 13 10 |
Combine the items on the left of the equation:
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.
[ 4/6 Equation]
Work: Find the solution of equation 0.2x+0.2x+3.6 = 8.4 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 2 5 | x | + | 18 5 |
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.
[ 5/6 Equation]
Work: Find the solution of equation 0.8x+0.6x-1.6 = 2.6 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 7 5 | x | − | 8 5 |
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.
[ 6/6 Equation]
Work: Find the solution of equation 0.4x+0.2x-4.7 = 1.3 .
Question type: Equation
Solution:Original question:| | 2 5 | x | + | 1 5 | x | − | 47 10 | = | 13 10 |
| Left side of the equation = | 3 5 | x | − | 47 10 |
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.
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