Overview: 6 questions will be solved this time.Among them
☆6 equations
[ 1/6 Equation]
Work: Find the solution of equation 3x×4+2x×3-44 = 280 .
Question type: Equation
Solution:Original question:| | 3 | x | × | 4 | + | 2 | x | × | 3 | − | 44 | = | 280 |
| Left side of the equation = | 12 | x | + | 6 | x | − | 44 |
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 3x×5+22 = 481-3x×4 .
Question type: Equation
Solution:Original question:| | 3 | x | × | 5 | + | 22 | = | 481 | − | 3 | x | × | 4 |
| Left side of the equation = | 15 | x | + | 22 |
The equation is transformed into :
| | 15 | x | + | 22 | = | 481 | − | 3 | x | × | 4 |
| Right side of the equation = | 481 | − | 12 | x |
The equation is transformed into :
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 (81÷9)x+32 = 59 .
Question type: Equation
Solution:Original question: Remove the bracket on the left of the equation:
| Left side of the equation = | 81 | ÷ | 9 | × | x | + | 32 |
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 5x×2+14 = 28-4x .
Question type: Equation
Solution:Original question:| Left side of the equation = | 10 | x | + | 14 |
The equation is transformed into :
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 3x×2+x-43 = 62 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 6 | x | + | x | − | 43 |
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 4x×5-2x-24 = 48 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 20 | x | − | 2 | x | − | 24 |
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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