Приведите дроби к общему знаменателю: a) 3/7 = ?/ 14 и 1/2 = ?/14 б) 5/6 = ?/ 12 и 3/4 = ?/12 в) 2/5 = ?/15 и 7/15 = ?/15 г) 5/6 = ? и 5/8 = ? д) 7/9 = ? и 1/6 = ? е) 5/4 = ? и 3/5 = ?
3/7=6/14 1/2=7/14
5/6=10/12 3/4=9/12
2/5=6/15 7/15=7/15