求教:9(x-2.

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求教:9(x-2.求教:9(x-2.求教:9(x-2.9(x-2.5)=4x9x-22.5=4x9x-4x=22.55x=22.5x=22.5÷5x=4.59x-2.5*9=4x9x-4x=2.5*9

求教:9(x-2.
求教:9(x-2.

求教:9(x-2.
9(x-2.5)=4x
9x-22.5=4x
9x-4x=22.5
5x=22.5
x=22.5÷5
x=4.5

9x-2.5*9=4x
9x-4x=2.5*9
5x=22.5
x=4.5

9x-22.5=4x
5x=22.5
x=4.5