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    Work: Find the solution of equation 570 = 0.3b+b .
    Question type: Equation
    Solution:Original question:

570

=

3 10

b

+

b

Right side of the equation =

13 10

b

    The equation is transformed into :

570

=

13 10

b

    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 :

13 10

b

=

570

    The coefficient of the unknown number is reduced to 1 :

b

=

570

÷

13 10

=

570

×

10 13

    We obtained :

b

=

5700 13

    This is the solution of the equation.

    Convert the result to decimal form :

b

=

438.461538

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