Overview: 5 questions will be solved this time.Among them
☆5 equations
[ 1/5 Equation]
Work: Find the solution of equation 6x+4x-39 = 81 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 10 | x | − | 39 |
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.
[ 2/5 Equation]
Work: Find the solution of equation 3x+5x+23 = 79 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 8 | x | + | 23 |
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.
[ 3/5 Equation]
Work: Find the solution of equation 5x+21 = 61+x .
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.
[ 4/5 Equation]
Work: Find the solution of equation 8x+2x+21 = 141 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 10 | x | + | 21 |
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.
[ 5/5 Equation]
Work: Find the solution of equation 2x+22 = 30+x .
Question type: Equation
Solution:Original question:
Transposition :
i.e.
Combine the items on the left of the equation:
Combine the items on the right of the equation:
This is the solution of the equation.
This is the solution of the equation.
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