6x+2分之3x=9 解方程！！！

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(6+3/2)x=9
(15/2)x=9
x=9÷(15/2)
x=6/5

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3x/(6x+2)=9
3x=9(6x+2)
3x=54x+18
51x=-18
x=-6/17

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