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[ 1/1 Equation]
    Work: Find the solution of equation -9*[-5.7-2.5+x/2]*(5-x) = 64000*0.3x .
    Question type: Equation
    Solution:Original question:

-

9

(

-

57 10

−

5 2

+

x

÷

2

)

(

5

−

x

)

=

64000

×

3 10

x

    Remove the bracket on the left of the equation:

Left side of the equation =

9

×

57 10

(

5

−

x

)

+

9

×

5 2

(

5

−

x

)

−

9

x

÷

2

×

(

5

−

x

)

=

513 10

(

5

−

x

)

+

45 2

(

5

−

x

)

−

9 2

x

(

5

−

x

)

=

513 10

×

5

−

513 10

x

+

45 2

(

5

−

x

)

−

9 2

x

(

5

−

x

)

=

513 2

−

513 10

x

+

45 2

(

5

−

x

)

−

9 2

x

(

5

−

x

)

=

513 2

−

513 10

x

+

45 2

×

5

−

45 2

x

−

9 2

x

(

5

−

x

)

=

513 2

−

513 10

x

+

225 2

−

45 2

x

−

9 2

x

(

5

−

x

)

=

369

−

369 5

x

−

9 2

x

(

5

−

x

)

=

369

−

369 5

x

−

9 2

x

×

5

+

9 2

x

x

=

369

−

369 5

x

−

45 2

x

+

9 2

x

x

=

369

−

963 10

x

+

9 2

x

x

    The equation is transformed into :

369

−

963 10

x

+

9 2

x

x

=

64000

×

3 10

x

Right side of the equation =

19200

x

    The equation is transformed into :

369

−

963 10

x

+

9 2

x

x

=

19200

x

    
        x≈0.019123 , keep 6 decimal places    
    There are 1 solution(s).

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