8/15-12/35+16/63-20/99+24/143-28/195=?
8/15-12/35+16/63-20/99+24/143-28/195=?
8/15-12/35+16/63-20/99+24/143-28/195
15分之8-35分之12+63分之16-99分之20+143分之24-165分之28
巧算:8/3/3+16/15/15+24/35/35+32/63/63+40/99/99+48/143/143
有理数题,8/3*3+16/15*15+24/35*35+32/63*63+40/99*99+48/143*143=?
8/3^2+16/15^2+24/35^2+32/63^2+40/99^2+48/143^2=?
4/3+16/15+36/35+64/63+100/99+144/143+196/195+256/255=
8-2/3-2/15-2/35-2/63-2/99-2/143-2/195-2/255=
4/3+16/15+36/35+64/63+100/99+144/143+196/195+256/255
15,35,63,99,143,195,255,323的最小公倍数
30*(1/15+1/35+1/63+1/99+1/143+1/195)=
简算:3/1+15/1+35/1+63/1+99/1+143/1+195/1=?