12*3х=36х
10х*6=60х
5а*7b=35ab
8m*12n=96mn
2a*3b*4c=24abc
5х*2у*10z=100хуz
№430.
37°12' + 5° 7' 19'' = 42°19' 19''
5° 27' + 3° 56' = 8° 83' = 9° 23'
23' 52'' + 8'' = 23' 60'' = 24'
49' 33'' + 24' 28'' = 73' 61'' = 74' 1'' = 1° 14' 1''
4° 17' 29'' + 1° 45' 38'' = 5° 62' 67'' = 5° 63' 7'' = 6° 3' 7''
89° 59' 59'' + 1'' = 89° 59' 60'' = 89° 60' = 90°
1)3/17 , т.к. 6 составляет 6/34 от 34,сокращаем 6/34 и получаем 3/17