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    Work: Find the solution of equation 0.6X+150 = (0.4X+150)*1.4 .
    Question type: Equation
    Solution:Original question:

3 5

X

+

150

=

(

2 5

X

+

150

)

×

7 5

    Remove the bracket on the right of the equation:

Right side of the equation =

2 5

X

×

7 5

+

150

×

7 5

=

14 25

X

+

210

    The equation is transformed into :

3 5

X

+

150

=

14 25

X

+

210

    Transposition :

3 5

X

−

14 25

X

=

210

−

150

    Combine the items on the left of the equation:

1 25

X

=

210

−

150

    Combine the items on the right of the equation:

1 25

X

=

60

    The coefficient of the unknown number is reduced to 1 :

X

=

60

÷

1 25

=

60

×

25

    We obtained :

X

=

1500

    This is the solution of the equation.

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