Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 0.3x+0.8x+4.5 = 6.7 .
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.
[ 2/6 Equation]
Work: Find the solution of equation 0.8x+4.1 = 6.6+0.3x .
Question type: Equation
Solution:Original question:| | 4 5 | x | + | 41 10 | = | 33 5 | + | 3 10 | x |
Transposition :
| | 4 5 | x | − | 3 10 | x | = | 33 5 | − | 41 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.
[ 3/6 Equation]
Work: Find the solution of equation 4(x-1.6) = 2.4 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | 4 | x | − | 4 | × | 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.
Convert the result to decimal form :
[ 4/6 Equation]
Work: Find the solution of equation 0.3x+0.5x+4.5 = 10.1 .
Question type: Equation
Solution:Original question:| | 3 10 | x | + | 1 2 | x | + | 9 2 | = | 101 10 |
| Left side of the equation = | 4 5 | 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 0.6x+2.9 = 3.3+0.5x .
Question type: Equation
Solution:Original question:| | 3 5 | x | + | 29 10 | = | 33 10 | + | 1 2 | x |
Transposition :
| | 3 5 | x | − | 1 2 | x | = | 33 10 | − | 29 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.
[ 6/6 Equation]
Work: Find the solution of equation (x-1.3)÷6 = 4.2 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | x | × | 1 6 | − | 13 10 | × | 1 6 |
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.
Convert the result to decimal form :
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