Решить последние два примера,

2)

(2 9/16 + 5,45 : 6 8/35) : 6 1/9 = 9/16,

1) 5,45 : 6 8/35 = 545/100 : 218/35 = 545/100 * 35/218 = 7/8,

2) 2 9/16 + 7/8 = 2 9/16 + 14/16 = 2 23/16 = 3 7/16,

3) 3 7/16 : 6 1/9 = 55/16 : 55/9 = 55/16 * 9/55 = 9/16,

4)

(10 1/7 - 3,48 * 75/116) : 31 4/7 = 1/4   (или  0,25),

1) 3,48 * 75/116 = 348/100 * 75/116 = 9/4 = 2 1/4,

2) 10 1/7 - 2 1/4 = 10 4/28 - 2 7/28 = 9 32/28 - 2 7/28 = 7 25/28,

3) 7 25/28 : 31 4/7 = 221/28 : 221/7 = 221/28 * 7/221 = 7/28 = 1/4   (или  0,25)