Question

как решить дроби номер 427

Answer 1

№427.
1) 7/12+7/20 = 35/60+21/60 = 56/60 = 14/15
2) 3/8+1/18 = 27/72 + 4/72 = 31/72
3) 1/12+11/14 = 7/84 + 66/84 = 73/84
4) 2/15+7/12 = 8/60 + 35/60 = 43/60
5) 9/14-5/12 = 54/84-35/84 = 19/84
6) 19/75+7/50 = 38/150+21/150 = 59/150