《动脑筋》照例子例1/2*1/3=1/2-1/3=1/6;1/3*1/4=1/3-1/4=1/123/8*3/()=3*
1个回答
3/8*3/11=3/8-3/11=9/88
1/(8/3)=3/8
1/(8/3+1)=3/11
相关问题
2/3-1/8-1/6= 1/3+2/5+4/15= 1/4+2/5+3/20= 1-3/4-1/8= 4/5-1/3-
1/(1*2)+2/(1*2*3)+3/(1*2*3*4)+.+8/(1*2*3*4*5*6*7*8*9)=?
2(3+1)(3^2+1)(3^3+1)(3^4+1)(3^8+1)+1
a1=1/1*2*3+1/2=2/3; a2=1/2*3*4+1/3=3/8,a3=1/3*4*5+1/4=4/15``
1/(1+2)+1/(1+2+3)1/(1+2+3+4)+.1/(1+2+3+4+5+6+7+8+9+10)=
(1/1+2)+(1/1+2+3)+(1/1+2+3+4)+(1/1+2+3+4+5)+.+(1/1+2+3+4+5+6
1+1+1+1+1+1+12+2+2+2+2+3+3+3+3+6+5-8+8-4+5+8+8+99999999999
3/4-1/4-1/2=5/8-1/4-1/4=5/1+3/1+7/1=3/1-6/1-1/12=9/10-3/20-3
已知2*3/1=2/1-3/1,3/1-4/1=12/1计算3*4/1+4*5/1+5*6/1+6*7/1+7*8/1+
(1+2+3+4/1)+(1+2+3+4+5/1)+(1+2+3+4+5+6/1)+.+(1+2+3+4+.+99/1)