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    Work: Find the solution of equation 3.3/(75+x)x = 1.248 .
    Question type: Equation
    Solution:Original question:

33 10

÷

(

75

+

x

)

×

x

=

156 125

Multiply both sides of the equation by:

(

75

+

x

)

33 10

x

=

156 125

(

75

+

x

)

    Remove a bracket on the right of the equation:：

33 10

x

=

156 125

×

75

+

156 125

x

    The equation is reduced to :

33 10

x

=

468 5

+

156 125

x

    Transposition :

33 10

x

−

156 125

x

=

468 5

    Combine the items on the left of the equation:

513 250

x

=

468 5

    The coefficient of the unknown number is reduced to 1 :

x

=

468 5

÷

513 250

=

468 5

×

250 513

=

52

×

50 57

    We obtained :

x

=

2600 57

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

45.614035

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