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    Work: Find the solution of equation x-188+x-219 = 311 .
    Question type: Equation
    Solution:Original question:

x

−

188

+

x

−

219

=

311

Left side of the equation =

2

x

−

407

    The equation is transformed into :

2

x

−

407

=

311

    Transposition :

2

x

=

311

+

407

    Combine the items on the right of the equation:

2

x

=

718

    The coefficient of the unknown number is reduced to 1 :

x

=

718

÷

2

=

718

×

1 2

=

359

×

1

    We obtained :

x

=

359

    This is the solution of the equation.

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