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    Work: Find the solution of equation （x÷750×100）×60% = 278.1 .
    Question type: Equation
    Solution:Original question:

(

x

÷

750

×

100

)

×

60 100

=

2781 10

    Remove the bracket on the left of the equation:

Left side of the equation =

x

÷

750

×

100

×

60 100

=

x

×

2 25

    The equation is transformed into :

2 25

x

=

2781 10

    The coefficient of the unknown number is reduced to 1 :

x

=

2781 10

÷

2 25

=

2781 10

×

25 2

=

2781 2

×

5 2

    We obtained :

x

=

13905 4

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

3476.25

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