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    Work: Find the solution of equation 0.21x+4.1 = 0 .
    Question type: Equation
    Solution:Original question:

21 100

x

+

41 10

=

0

    Transposition :

21 100

x

=

0

−

41 10

    Combine the items on the right of the equation:

21 100

x

=

-

41 10

    The coefficient of the unknown number is reduced to 1 :

x

=

-

41 10

÷

21 100

=

-

41 10

×

100 21

=

-

41

×

10 21

    We obtained :

x

=

-

410 21

    This is the solution of the equation.

    Convert the result to decimal form :

x

=

- 19.52381

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