Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 0.4x+0.7x+3.4 = 8.9 .
Question type: Equation
Solution:Original question:| | 2 5 | x | + | 7 10 | x | + | 17 5 | = | 89 10 |
| Left side of the equation = | 11 10 | x | + | 17 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 0.9x+0.8x-1 = 4.1 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 17 10 | x | − | 1 |
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 0.1x+0.4x+1.9 = 2.9 .
Question type: Equation
Solution:Original question:| | 1 10 | x | + | 2 5 | x | + | 19 10 | = | 29 10 |
| Left side of the equation = | 1 2 | x | + | 19 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.
[ 4/6 Equation]
Work: Find the solution of equation 0.9x+2.2 = 6.7+0.4x .
Question type: Equation
Solution:Original question:| | 9 10 | x | + | 11 5 | = | 67 10 | + | 2 5 | x |
Transposition :
| | 9 10 | x | − | 2 5 | x | = | 67 10 | − | 11 5 |
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.
[ 5/6 Equation]
Work: Find the solution of equation 0.8x+4.4 = 9.8+0.2x .
Question type: Equation
Solution:Original question:
Transposition :
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.
[ 6/6 Equation]
Work: Find the solution of equation 0.9x+3.8 = 5.9+0.6x .
Question type: Equation
Solution:Original question:| | 9 10 | x | + | 19 5 | = | 59 10 | + | 3 5 | x |
Transposition :
| | 9 10 | x | − | 3 5 | x | = | 59 10 | − | 19 5 |
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.
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