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    Work: Find the solution of equation -4082750+300000+a-a*10%/4-450000 = 30000 .
    Question type: Equation
    Solution:Original question:

-

4082750

+

300000

+

a

−

a

×

10 100

÷

4

−

450000

=

30000

Left side of the equation =

-

4082750

+

300000

+

a

−

a

×

1 40

−

450000

=

-

4232750

+

39 40

a

    The equation is transformed into :

-

4232750

+

39 40

a

=

30000

    Transposition :

39 40

a

=

30000

+

4232750

    Combine the items on the right of the equation:

39 40

a

=

4262750

    The coefficient of the unknown number is reduced to 1 :

a

=

4262750

÷

39 40

=

4262750

×

40 39

    We obtained :

a

=

170510000 39

    This is the solution of the equation.

    Convert the result to decimal form :

a

=

4372051.282051

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