Приведите дроби к наменьшему общему знаменателю. 3/10 и2/5 5/9 и7/18 9/14 и6/7 1/5 и7/25 1/2 и1/3 2/5 и3/7 3/5 и5/6 6/11 и4/9 5/6 и4/11 7/18 и1/6 1/2,1/6 и2/3 1/4,5/7 и9/28 1/5,11/20 и3/10 3/4,7/8 и3/16

3/10 и 2/5 = приведем к 10,

2/5 = 10 : 5 * 2 = 4/10,

5/9 и 7/18 = приведем к 18,

5/9 = 18 : 9 * 5 = 10/18,

9/14 и 6/7 = приведем к 14,

6/7 = 14 : 7 * 6 = 12/14,

1/5 и 7/25 = приведем к 25,

1/5 = 25 : 5 * 1 = 5/25,

1/2 и 1/3 = приведем к 6.

1/2 = 6 : 2 * 1 = 3/6,

1/3 = 6 : 3 * 1 = 2/6,

2/5 и 3/7 = приведем к 35.

2/5 = 35 : 5 * 2 = 14/35,

3/7 = 35 : 7 * 3 = 15/35,

3/5 и 5/6 = приведем к 30,

3/5 = 30 : 5 * 3 = 18/30,

5/6 = 30 : 6 * 5 = 25/30.

6/11 и 4/9 = приведем к 99,

6/11 = 99 : 11 * 6 = 54/99,

4/9 = 99 : 9 * 4 = 44/99.

5/6 и 4/11 = приведем к 66,

5/6 = 66 : 6 * 5 = 55/66,

4/11 = 66 : 11 * 4 = 24/66.

7/18 и 1/6 = приведем к 18,

1/6 = 18 : 6 * 1 = 3/18.

1/2, 1/6 и 2/3 = приведем к 6,

1/2 = 6 : 2 * 1 = 3/6,

2/3 = 6 : 3 * 2 = 4/6.

1/4, 5/7 и 9/28 = приведем к 28,

1/4 = 28 : 4 * 1 = 7/28,

5/7 = 28 : 7 * 5 = 20/28.

1/5, 1/20 и 3/10 = приведем к 20,

1/5 = 20 : 5 * 1 = 4/20,

3/10 = 20 : 10 * 3 = 6/20.

3/4, 7/8 и 3/16 = приведем к 16,

3/4 = 16 : 4 * 3 = 12/16,

7/8 = 16 : 8 * 7 = 14/18.