Найдите корень уравнения x+x/7=-x

(x-1 2/5):10+7 5/12=9       

 <span> <span> (x-1 2/5):10=9-7 5/12        </span></span>

<span><span> </span></span><span><span> <span>(x-1 2/5):10=8 12/12-7 5/12</span></span> </span><span>  </span>

<span>   <span> (x-1 2/5):10=1 7/12   </span></span>

<span><span>  </span></span><span>x-1 2/5=19/12*10</span>

<span>x=190/12+7/5</span>

<span>x=95/6+7/5</span>

<span>x=475/30+42/30</span>

<span>x=517/30</span>

<span>x=17  7/30</span>

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