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           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation x÷20+x÷30 = 20 .
    Question type: Equation
    Solution:Original question:

x

÷

20

+

x

÷

30

=

20

Left side of the equation =

1 12

x

    The equation is transformed into :

1 12

x

=

20

    The coefficient of the unknown number is reduced to 1 :

x

=

20

÷

1 12

=

20

×

12

    We obtained :

x

=

240

    This is the solution of the equation.

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