Oblicz:
oblicz 25% wyrażenia
⅘-(1,2-5/12-0,8):(½)³
Prosze o obliczenia
te 5/12 to jest ułamek
⅘-(1,2-5/12-0,8):(½)³ =
4/5 - (1,2 - 0,8 - 5/12) : (1/8) =
4/5 - (0,4 - 5/12) * 8 =
4/5 - (2/5 - 5/12) * 8 =
4/5 - (24/60 - 25/60) * 8 =
4/5 - (-1/60) * 8 = 4/5 + 8/60 = 4/5 + 2/15 = 12/15 + 2/15 = 14/15
25% z liczby 14/15 to
25% * 14/15= 25/100 * 14/15 = 7/30
[...] = 4/5 - (1,2 - 0,8 - 5/12) : (1/8) = 4/5 - (0,4 - 5/12) * 8 = 4/5 - (2/5 - 5/12) * 8 = 4/5 - (24/60 - 25/60) * 8 = 4/5 - (-1/60) * 8 = 4/5 + 8/60 = 4/5 + 2/15 = 12/15 + 2/15 = 14/15
25% * 14/15= 25/100 * 14/15 = 7/30 - to jest 25 % wyrażenia
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⅘-(1,2-5/12-0,8):(½)³ =
4/5 - (1,2 - 0,8 - 5/12) : (1/8) =
4/5 - (0,4 - 5/12) * 8 =
4/5 - (2/5 - 5/12) * 8 =
4/5 - (24/60 - 25/60) * 8 =
4/5 - (-1/60) * 8 = 4/5 + 8/60 = 4/5 + 2/15 = 12/15 + 2/15 = 14/15
25% z liczby 14/15 to
25% * 14/15= 25/100 * 14/15 = 7/30
[...] = 4/5 - (1,2 - 0,8 - 5/12) : (1/8) = 4/5 - (0,4 - 5/12) * 8 = 4/5 - (2/5 - 5/12) * 8 = 4/5 - (24/60 - 25/60) * 8 = 4/5 - (-1/60) * 8 = 4/5 + 8/60 = 4/5 + 2/15 = 12/15 + 2/15 = 14/15
25% * 14/15= 25/100 * 14/15 = 7/30 - to jest 25 % wyrażenia