Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation 0.1990x2 = 0.0398 .
    Question type: Equation
    Solution:Original question:

199 1000

x

×

2

=

199 5000

Left side of the equation =

199 500

x

    The equation is transformed into :

199 500

x

=

199 5000

    The coefficient of the unknown number is reduced to 1 :

x

=

199 5000

÷

199 500

=

199 5000

×

500 199

=

199 10

×

1 199

    We obtained :

x

=

199 1990

    This is the solution of the equation.

    By reducing fraction, we can get:

x

=

1 10

    Convert the result to decimal form :

x

=

0.1

Your problem has not been solved here? Please take a look at the  hot problems ！