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Oblicz a) 1/4+2/3+1/6 b)1 5/7+2 3/4 c)7/8-3/4 d)2 1/3-1 3/5
plis na dzisiaj​


Odpowiedź :

Odpowiedź:

1/4 + 2/3 + 1/6 = 3/12 + 8/12 + 2/12 = 13/12 = 1 i 1/12

1 i 5/7 + 2 i 3/4 = 1 i 20/28 + 2 i 21/28 = 3 i 41/28 = 4 i 13/28

7/8 - 3/4 = 7/8 - 6/8 = 1/8

2 i 1/3 - 1 i 3/5 = 2 i 5/15 - 1 i 9/15 = 1 i 20/15 - 1 i 9/15 = 11/15