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    Work: Find the solution of equation 2（x-13） = x+16+13 .
    Question type: Equation
    Solution:Original question:

2

(

x

−

13

)

=

x

+

16

+

13

    Remove the bracket on the left of the equation:

Left side of the equation =

2

x

−

2

×

13

=

2

x

−

26

    The equation is transformed into :

2

x

−

26

=

x

+

16

+

13

Right side of the equation =

x

+

29

    The equation is transformed into :

2

x

−

26

=

x

+

29

    Transposition :

2

x

−

x

=

29

+

26

    i.e.

x

=

29

+

26

    Combine the items on the left of the equation:

x

=

29

+

26

    Combine the items on the right of the equation:

x

=

55

    This is the solution of the equation.
    This is the solution of the equation.

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