А) 17°-29'=16°60'-29'=16°31'
б) 9°31'-2°58'=8°91'-2°58'=6°33'
в) 5'47''-3'56''=4'107''-3'56''=1'51''
г) 4°37'19''-3°39'58''=3°96'79''-3°39'58''=57'21''
д) 23'5''-8''=22'65''-8''=22'57''
е) 1°-1''=59'60''-1''=59'59''
ж) 1°-1'=60'-1'=59'
з) 1°-59'55''=59'60''-59'55''=5''