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    Work: Find the solution of equation 3x+4[x] = 16 .
    Question type: Equation
    Solution:Original question:

3

x

+

4

(

x

)

=

16

    Remove the bracket on the left of the equation:

Left side of the equation =

3

x

+

4

x

=

7

x

    The equation is transformed into :

7

x

=

16

    The coefficient of the unknown number is reduced to 1 :

x

=

16

÷

7

=

16

×

1 7

    We obtained :

x

=

16 7

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

2.285714

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