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    Work: Find the solution of equation 3x-5x = 48 .
    Question type: Equation
    Solution:Original question:

3

x

−

5

x

=

48

Left side of the equation =

-

2

x

    The equation is transformed into :

-

2

x

=

48

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

-

48

=

2

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 :

2

x

=

-

48

    The coefficient of the unknown number is reduced to 1 :

x

=

-

48

÷

2

=

-

48

×

1 2

=

-

24

×

1

    We obtained :

x

=

-

24

    This is the solution of the equation.

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