Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 4(3x-12) = 24 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | 4 | × | 3 | x | − | 4 | × | 12 |
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 0.6x-1.8 = 0.6+0.3x .
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.
[ 3/6 Equation]
Work: Find the solution of equation 0.7x+2.8 = 5.2+0.3x .
Question type: Equation
Solution:Original question:| | 7 10 | x | + | 14 5 | = | 26 5 | + | 3 10 | x |
Transposition :
| | 7 10 | x | − | 3 10 | x | = | 26 5 | − | 14 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.
[ 4/6 Equation]
Work: Find the solution of equation 0.6x+2.5 = 3.5+0.1x .
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.
[ 5/6 Equation]
Work: Find the solution of equation 0.1x+0.2x-1 = 3.5 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 3 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.
[ 6/6 Equation]
Work: Find the solution of equation 0.7x+0.2x-3.7 = 7.1 .
Question type: Equation
Solution:Original question:| | 7 10 | x | + | 1 5 | x | − | 37 10 | = | 71 10 |
| Left side of the equation = | 9 10 | x | − | 37 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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