Question

/-kreska ułamkowa
a)10 3/4-8 5/12=
b)3 1/6-1 5/8=
c)4 5/12-2 17/30=
d)6 3/4+7/8+5 1/2=
e)8 2/3+1 1/12-5/8=
f)12 3/4-1/8-2 3/5=

Answer 1

a)10 3/4-8 5/12= 43/4 - 101/12 = 129/12 - 101/12 = 28/12 = 2 4/12 = 2 1/3
b)3 1/6-1 5/8= 19/6 - 13/8 = 76/24 - 39/24 = 37/24 = 1 13/24
c)4 5/12-2 17/30= 53/12 - 77/30 = 265/60 - 154/60 = 111/60 = 1 51/60
d)6 3/4+7/8+5 1/2= 27/4 + 7/8 +11/2 = 54/8 + 7/8 + 44/8 = 105/8 = 13 1/8
e)8 2/3+1 1/12-5/8= 26/3 + 13/12 - 5/8 = 208/24 + 26/24 - 15/24 = 219/24 = 9 3/24 =
   9 1/8
f)12 3/4-1/8-2 3/5= 12,75 - 0,125 - 2,6 = 10,025

Answer 2

10 3/4 - 8 5/12= 10 9/12 - 8 5/12= 2 4/12
3 1/6 - 1 5/8= 3 4/24 - 1 15/24= 1 13/24
4 5/12- 2 17/30= 4 25/60 - 2 34/60 = 1 51/60
6 3/4 + 7/8 + 5 1/2 = 6 6/8+ 7/8+5 4/8=12 1/6
8 2/3 +1 1/12- 5/8= 8 16/24+1 2/24-15/24= 9 3/24
12 3/4 - 1/8 - 2 3/5= 12 30/40 - 5/40 - 2 24/40= 10 1/40