Explicație pas cu pas:
a) 40°24' + 8°29' + 53°54' = 101°107' = 102°47'
b) 123°42' + 2°37' + 40°6' = 165°85'
c) 87° - 9° 48' - 52°35' = 86°60' - 9°48' - 52°35' = 77°12' - 52°35' = 76°72' - 52°35' = 24°37'
d) 108° - 45°34' - 32°29' = 107°60' - 45°34' - 32°29' = 62°26' - 32°29' = 61°86' - 32°29' = 29°57'