Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 7(x+0.1) = 70.7 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | 7 | x | + | 7 | × | 1 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.
[ 2/6 Equation]
Work: Find the solution of equation 0.2x+0.2x-1.1 = 3.7 .
Question type: Equation
Solution:Original question:| | 1 5 | x | + | 1 5 | x | − | 11 10 | = | 37 10 |
| Left side of the equation = | 2 5 | 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 0.9x+1.4 = 7.8+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.
[ 4/6 Equation]
Work: Find the solution of equation 0.2x+0.9x+4.5 = 14.4 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 11 10 | x | + | 9 2 |
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 0.3x+0.8x+3.4 = 8.9 .
Question type: Equation
Solution:Original question:| | 3 10 | x | + | 4 5 | 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.
[ 6/6 Equation]
Work: Find the solution of equation 0.7x+0.6x+1.5 = 4.1 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 13 10 | x | + | 3 2 |
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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