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    Work: Find the solution of equation 1199 = X-30*(X/200) .
    Question type: Equation
    Solution:Original question:

1199

=

X

−

30

(

X

÷

200

)

    Remove the bracket on the right of the equation:

Right side of the equation =

X

−

30

X

÷

200

=

X

−

3 20

X

=

17 20

X

    The equation is transformed into :

1199

=

17 20

X

    Transposition :

-

17 20

X

=

-

1199

    By shifting the terms and changing the symbols on toth sides of the equation, we obtain :

1199

=

17 20

X

    If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :

17 20

X

=

1199

    The coefficient of the unknown number is reduced to 1 :

X

=

1199

÷

17 20

=

1199

×

20 17

    We obtained :

X

=

23980 17

    This is the solution of the equation.

    Convert the result to decimal form :

X

=

1410.588235

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