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a) 4 - 3/8 = 3 8/8 - 3/8 = 3 5/8
b) -3 1/8 + 4 5/16 = - 3 2/16 + 4 5/16 = 1 3/16
c) 2,2 : (0,8 -1/5) = 2,2 : (0,8 - 0,2) =2,2 : 0,6 = 3,(6)
lub
2,2 : (0,8 - 1/5) = 22/10 : (8/10 - 2/10) = 22/10 : 6/10 = 22/10 * 10/6 =
= 22/1 * 1/6 = 22/6 = 3 4/6 = 3 2/3
d) 0,5 : 1/8 + (-1/4)² * 4
------------------------------- =
- 3
1/2 : 1/8 + 1/16 * 4
------------------------------- =
-3
1/2 * 8/1 + 1/4 * 1
----------------------------- =
-3
8/2 + 1/4
------------------ =
-3
4 + 1/4 4 1/4
----------- = ---------- = 4 1/4 : (-3) = 17/4 * (-1/3) = (-17/12) = - 1 5/12
-3 -3
14)
a) 4 5/6 + 3,1 = 4 5/6 + 3 1/10 = 4 25/30 + 3 3/30 = 7 28/30 = 7 14/15
b) 7,23 - 1 4/5 = 7,23 - 1,8 = 5,43
c) 3 5/9 * 3,6 = 32/9 * 36/10 =16/1 * 4/5 = 64/5 = 12 4/5
d) 2 1/4 : 0,375 = 2,25 : 0,375 = 6
a
3
b
c
d
14.
a
wspólny mianownik
b
c
d
nie umiem
pewnie jest wszystko źle ale doceń że siedziałam nad tym dość długo xd