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    Work: Find the solution of equation (100-x)/x = 0.08 .
    Question type: Equation
    Solution:Original question:

(

100

−

x

)

÷

x

=

2 25

Multiply both sides of the equation by:

x

(

100

−

x

)

=

2 25

x

    Remove a bracket on the left of the equation:：

100

−

x

=

2 25

x

    Transposition :

-

x

−

2 25

x

=

-

100

    Combine the items on the left of the equation:

-

27 25

x

=

-

100

    By shifting the terms and changing the symbols on toth sides of the equation, we obtain :

100

=

27 25

x

    If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :

27 25

x

=

100

    The coefficient of the unknown number is reduced to 1 :

x

=

100

÷

27 25

=

100

×

25 27

    We obtained :

x

=

2500 27

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

92.592593

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