1/1*2+1/2*3+1/3*4+1/4*5+1/5*6= 要简算
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6= 要简算
能简算的要简算;4/5*1/6\9/20= 3/7+4/7\3/2= 24*(1/2+1/3+1/4)= 12/21\4
5/6-4/5+3/4-2/3+1/2要简算
-1/2,+1/3,-1/4,+1/5,-1/6,.
2/3-5/6+1/3=?要简算
1/2{1/3[1/4(1/5x-1)-6]+4}=1
6/1{4/1[3/1(2/1x-1)+3]+5}=1 解方程
1/6【1/4{1/3(1/2X-1)+3}+5】=1
1+2+3+4+5+6=
1+2-3+4-5+6=
2(3^2+1)(3^4+1)(3^6+1)(3^8+1)要简算
计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4-5/8 4/5-(3/10+1/6) 5/9+7/