解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/(x+3)

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解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/(x+3)解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/(x+3)解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/

解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/(x+3)
解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/(x+3)

解不等式1/(x+4)+1/(x+5)>1/(x+6)+1/(x+3)

移向,通分,可化为(2x+9)/(x+3)(x+4)(x+5)(x+6)>0
同解于(2x+9)(x+3)(x+4)(x+5)(x+6)>0
穿根法得 x<-6 或 -5解分式不等式要小心去分母,尽量不去