求方程2/n+3/n+1+4/n+2=133/60
问题描述：
求方程2/n+3/n+1+4/n+2=133/60
答
9/n+3=133/60;
9/n=-47/60;
n=-540/47具体一点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;