求方程2/n+3/n+1+4/n+2=133/60
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求方程2/n+3/n+1+4/n+2=133/60
9/n+3=133/60;
9/n=-47/60;
n=-540/47
再问: 具体一点
再答: 2/n+3/n+1+4/n+2=133/60 ; (2/n+3/n+4/n)+(1+2)=133/60; 9/n+3=133/60; 9/n=133/60-3; 9/n=(133-60*3)/60=-47/60; 9/n=-47/60; n=9/(-47/60); n=-540/47;
9/n=-47/60;
n=-540/47
再问: 具体一点
再答: 2/n+3/n+1+4/n+2=133/60 ; (2/n+3/n+4/n)+(1+2)=133/60; 9/n+3=133/60; 9/n=133/60-3; 9/n=(133-60*3)/60=-47/60; 9/n=-47/60; n=9/(-47/60); n=-540/47;
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