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    Work: Find the solution of equation （8%*100/55*x）/（1－8%*100/55*x） = 10% .
    Question type: Equation
    Solution:Original question:

(

8 100

×

100

÷

55

×

x

)

÷

(

1

−

8 100

×

100

÷

55

×

x

)

=

10 100

Multiply both sides of the equation by:

(

1

−

8 100

×

100

÷

55

×

x

)

(

8 100

×

100

÷

55

×

x

)

=

10 100

(

1

−

8 100

×

100

÷

55

×

x

)

    Remove a bracket on the left of the equation:：

8 100

×

100

÷

55

×

x

=

10 100

(

1

−

8 100

×

100

÷

55

×

x

)

    Remove a bracket on the right of the equation:：

8 100

×

100

÷

55

×

x

=

10 100

×

1

−

10 100

×

8 100

×

100

÷

55

×

x

    The equation is reduced to :

8 55

x

=

1 10

−

4 275

x

    Transposition :

8 55

x

+

4 275

x

=

1 10

    Combine the items on the left of the equation:

4 25

x

=

1 10

    The coefficient of the unknown number is reduced to 1 :

x

=

1 10

÷

4 25

=

1 10

×

25 4

=

1 2

×

5 4

    We obtained :

x

=

5 8

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

0.625

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