用简便方法做这道题 1-1/2-1/4-1/8-1/16-1/32-1/64-1/128=?要求有算式_数学解答

用简便方法做这道题 1-1/2-1/4-1/8-1/16-1/32-1/64-1/128=?要求有算式

人气：447 ℃　时间：2019-10-18 02:27:02

解答

=1/2-1/4-1/8-1/16-1/32-1/64-1/128
=1/4-1/8-1/16-1/32-1/64-1/128
=1/8-1/16-1/32-1/64-1/128
=1/16-1/32-1/64-1/128
=1/32-1/64-1/128
=1/64-1/128
=1/128