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    Work: Find the solution of equation x+(1+1/3)X = 30 .
    Question type: Equation
    Solution:Original question:

x

+

(

1

+

1

÷

3

)

x

=

30

    Remove the bracket on the left of the equation:

Left side of the equation =

x

+

1

x

+

1

÷

3

×

x

=

x

+

1

x

+

1 3

x

=

7 3

x

    The equation is transformed into :

7 3

x

=

30

    The coefficient of the unknown number is reduced to 1 :

x

=

30

÷

7 3

=

30

×

3 7

    We obtained :

x

=

90 7

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

12.857143

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