(1/x-5)+(1/x-9)=(1/x-8)+(1/x-6) 两边通分得 (2x-14)/(x^2-14x+45)=(2x-14)/(x^2-14x+48) 当2x-14=0,即x=7时 明显成立 当2x-14不等于0时,1/(x^2-14x+45)=1/(x^2-14x+48) 该方程无解 所以原方程的解为x=7
(1/x-5)+(1/x-9)=(1/x-8)+(1/x-6)怎么做
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