Odpowiedź:
g)
4,52 - 1,22 + 6 1/3 - 1 1/7 = 3,3 + 6 7/21 - 1 3/21 = 3,3 + 5 4/21 =
= 3 3/10 + 5 4/21 = 3 63/210 + 5 40/210 = 8 103/210
h)
5,68 - 1 3/14 + 2,12 - 5 9/14 = 7,8 - 6 12/14 = 7,8 - 6 6/7 = 7 8/10 - 6 6/7 =
= 7 4/5 - 6 6/7 = 7 28/35 - 6 30/35 = 6 63/35 - 6 30/35 = 33/35
i)
5,8 - 5 8/9 + 3,4 - 3 3/27 = 9,2 - 5 8/9 - 3 1/9 = 9,2 - 8 9/9 = 9,2 - 9 = 0,2
g)
11 3/4 + (3 2/9 - 1 1/72) = 11 3/4 + (3 16/72 - 1 1/72) = 11 3/4 + 2 15/72 =
= 11 3/4 + 2 5/24 = 11 18/24 + 2 5/24 = 13 23/24
h)
25 2/13 - (7 1/6 - 2 2/3) = 25 2/13 - (7 1/6 - 2 2/6) =
= 25 2/13 - (6 7/6 - 2 2/6) = 25 2/13 - 4 5/6 = 25 12/78 - 4 65/78 =
= 24 90/78 - 4 65/78 = 20 25/78
j)
41 4/15 - (23 3/6 - 21,2) = 41 4/15 - (23,5 - 21,2) = 41 4/15 - 2,3 =
= 41 4/15 - 1 3/10 = 41 16/60 - 1 18/60 = 40 76/60 - 1 18/60 = 39 58/60 =
= 39 29/30
