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    Work: Find the solution of equation x+x*0.1+(x*0.1)*0.09 = 57251400 .
    Question type: Equation
    Solution:Original question:

x

+

x

×

1 10

+

(

x

×

1 10

)

×

9 100

=

57251400

Left side of the equation =

11 10

x

+

(

x

×

1 10

)

×

9 100

    The equation is transformed into :

11 10

x

+

(

x

×

1 10

)

×

9 100

=

57251400

    Remove the bracket on the left of the equation:

Left side of the equation =

11 10

x

+

x

×

1 10

×

9 100

=

11 10

x

+

x

×

9 1000

=

1109 1000

x

    The equation is transformed into :

1109 1000

x

=

57251400

    The coefficient of the unknown number is reduced to 1 :

x

=

57251400

÷

1109 1000

=

57251400

×

1000 1109

    We obtained :

x

=

57251400000 1109

    This is the solution of the equation.

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