帮我解题36/X-4 —36/X=0.36/x-4 - 36/x = 0.3

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帮我解题36/X-4—36/X=0.36/x-4-36/x=0.3帮我解题36/X-4—36/X=0.36/x-4-36/x=0.3帮我解题36/X-4—36/X=0.36/x-4-36/x=0.33

帮我解题36/X-4 —36/X=0.36/x-4 - 36/x = 0.3
帮我解题36/X-4 —36/X=0.
36/x-4 - 36/x = 0.3

帮我解题36/X-4 —36/X=0.36/x-4 - 36/x = 0.3
36/x-4 - 36/x = 0.3
方程两边同乘以x(x-4)得:
36x-36(x-4)=0.3x(x-4)
整理可得:
x^2-4x-480=0
即:
(x-24)(x+20)=0
所以:
x=24或x=-20

120x-120x+480=x^2-4x
x^2-4x-480=0
(x-24)(x+20)=0
x=24
x=-20