Rozwiąż równania :)
1. 2 2/3 - 5 1/4 + 0,75 =
2. 1 7/12 + 1 5/6 - 1/2 : 2/3
3. -3,625 - 7 3/4 + 3 1/2 : (1 1/3)
4. (-2 2/3) : (-1 1/5) - ( 5 1/18 - 6 1/9)
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