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23 -23
-8 8
(2 1/2) -2 1/2
(-0,2) 0.2
1 -1
-1 1
odwrotność
23 1/23
-8 -1/8,
(2 1/2) 2/5
(-0,2) -5
1 1
-1 -1
wartość bezwzględna
23 23
-8 8
(2 1/2) 2 1/2
(-0,2) 0.2
1 1
-1 1
-8 8
21/2 -21/2
-0,2 0,2
1 -1
-1 1
2. 23 1/23
-8 -1/8
21/2 2/21
-0,2= -1/5 -5
1 1
-1 -1