Overview: 3 questions will be solved this time.Among them
           ☆3 equations

[ 1/3 Equation]
    Work: Find the solution of equation 3x1+2x2+3x3 = 1 .
    Question type: Equation
    Solution:Original question:

3

x

×

1

+

2

x

×

2

+

3

x

×

3

=

1

Left side of the equation =

3

x

+

4

x

+

9

x

=

16

x

    The equation is transformed into :

16

x

=

1

    The coefficient of the unknown number is reduced to 1 :

x

=

1

÷

16

=

1

×

1 16

    We obtained :

x

=

1 16

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

0.0625

[ 2/3 Equation]
    Work: Find the solution of equation x1+2x2+3x3 = 3 .
    Question type: Equation
    Solution:Original question:

x

×

1

+

2

x

×

2

+

3

x

×

3

=

3

Left side of the equation =

x

×

1

+

4

x

+

9

x

=

14

x

    The equation is transformed into :

14

x

=

3

    The coefficient of the unknown number is reduced to 1 :

x

=

3

÷

14

=

3

×

1 14

    We obtained :

x

=

3 14

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

0.214286

[ 3/3 Equation]
    Work: Find the solution of equation 2x1+3x2+2x3 = 4 .
    Question type: Equation
    Solution:Original question:

2

x

×

1

+

3

x

×

2

+

2

x

×

3

=

4

Left side of the equation =

2

x

+

6

x

+

6

x

=

14

x

    The equation is transformed into :

14

x

=

4

    The coefficient of the unknown number is reduced to 1 :

x

=

4

÷

14

=

4

×

1 14

=

2

×

1 7

    We obtained :

x

=

2 7

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

0.285714

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