4/ 5 do pt.3= 64/125=0,512
7/13 :21/26=14/26 x 26/21=2/3
10- 4 2/3= 9 3/3-4 2/3=5 1/3
4 2/5 x 11/ 4=22/ 5 x 11/4= 242/ 20= 12,1
(1 2/3)²= (5/3)²= 25/9= 2 7/9
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4/ 5 do pt.3= 64/125=0,512
7/13 :21/26=14/26 x 26/21=2/3
10- 4 2/3= 9 3/3-4 2/3=5 1/3
4 2/5 x 11/ 4=22/ 5 x 11/4= 242/ 20= 12,1
(1 2/3)²= (5/3)²= 25/9= 2 7/9