x+2/338+x+3/337+x+4/336+x+5/335+x+360/5=0

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1. Đáp án:

    

   Giải thích các bước giải:

    `(x+2)/338+(x+3)/337+(x+4)/336+(x+5)/335+(x+360)/5=0`

   `=>[(x+2)/338+1]+[(x+3)/337+1]+[(x+4)/336+1]+[(x+5)/335+1]+[(x+360)/5-4]=0`

   `=>(x+340)/338+(x+340)/337+(x+340)/336+(x+340)/335+(x+340)/5=0`

   `=>(x+340)(1/338+1/337+1/336+1/335+1/5)=0`

   `=>x=-340`(vì `1/338+1/337+1/336+1/335+1/5>0)`

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