Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 0.6x+1.5 = 3.1+0.4x .
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.
[ 2/6 Equation]
Work: Find the solution of equation 0.7x+0.8x-4.4 = 9.1 .
Question type: Equation
Solution:Original question: | 7 10 | x | + | 4 5 | x | − | 22 5 | = | 91 10 |
Left side of the equation = | 3 2 | x | − | 22 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.
[ 3/6 Equation]
Work: Find the solution of equation 0.4x+0.3x+4.2 = 7.7 .
Question type: Equation
Solution:Original question: | 2 5 | x | + | 3 10 | x | + | 21 5 | = | 77 10 |
Left side of the equation = | 7 10 | x | + | 21 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.
[ 4/6 Equation]
Work: Find the solution of equation 0.7x+3.7 = 5.2+0.2x .
Question type: Equation
Solution:Original question: | 7 10 | x | + | 37 10 | = | 26 5 | + | 1 5 | x |
Transposition :
| 7 10 | x | − | 1 5 | x | = | 26 5 | − | 37 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.
[ 5/6 Equation]
Work: Find the solution of equation 0.4x+0.9x-2 = 1.9 .
Question type: Equation
Solution:Original question: Left side of the equation = | 13 10 | x | − | 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.
[ 6/6 Equation]
Work: Find the solution of equation 0.9x+3 = 8+0.4x .
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.
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