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[ 1/1 Equation]
    Work: Find the solution of equation 1.4x*0.8-x = 270 .
    Question type: Equation
    Solution:Original question:

7 5

x

×

4 5

−

x

=

270

Left side of the equation =

28 25

x

−

x

=

3 25

x

    The equation is transformed into :

3 25

x

=

270

    The coefficient of the unknown number is reduced to 1 :

x

=

270

÷

3 25

=

270

×

25 3

=

90

×

25

    We obtained :

x

=

2250

    This is the solution of the equation.

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