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    Work: Find the solution of equation (40%×m×40%+40%×m×3/4)-15+m×60% = m .
    Question type: Equation
    Solution:Original question:

(

40 100

m

×

40 100

+

40 100

m

×

3

÷

4

)

−

15

+

m

×

60 100

=

m

    Remove the bracket on the left of the equation:

Left side of the equation =

40 100

m

×

40 100

+

40 100

m

×

3

÷

4

−

15

+

60 100

m

=

4 25

m

+

3 10

m

−

15

+

60 100

m

=

53 50

m

−

15

    The equation is transformed into :

53 50

m

−

15

=

m

    Transposition :

53 50

m

−

m

=

15

    Combine the items on the left of the equation:

3 50

m

=

15

    The coefficient of the unknown number is reduced to 1 :

m

=

15

÷

3 50

=

15

×

50 3

=

5

×

50

    We obtained :

m

=

250

    This is the solution of the equation.

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