34°34'+21°51'=?21°3'-19°58'=?32°16'x5.

问题描述:

34°34'+21°51'=?21°3'-19°58'=?32°16'x5.

34°34'+21°51'=56°25′21°3'-19°58'=1°5′32°16'x5.=161°20′