佩凌
幼苗
共回答了25个问题采纳率:72% 举报
1-1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
=1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
=1/4-1/8-1/16-1/32-1/64-1/128-1/256
=1/8-1/16-1/32-1/64-1/128-1/256
=1/16-1/32-1/64-1/128-1/256
=1/32-1/64-1/128-1/256
=1/64-1/128-1/256
=1/128-1/256
=1/256.
1/10+5/6+1/5-1/2
=1/10+1/2+1/3+1/5-1/2
=1/10+1/5+1/3
=3/10+1/3
=19/30.
1年前
2