Oblicz:
2,5*(osiem pietnastych : 4 + 0,15 ) - pięć dwudziestych czwartych =
2,5 * (8/15 : 4 + 0,15) - 5/24=
2,5* (8/15 * 1/4 + 15/100-)-5/24=
2,5 *(2/15 +3/20)-5/24=
2,5 *(8/60 + 9/60) - 5/24=
5/2 * 17/60 - 5/24=17/24 - 5/24 = 12/24 = 1/2
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2,5 * (8/15 : 4 + 0,15) - 5/24=
2,5* (8/15 * 1/4 + 15/100-)-5/24=
2,5 *(2/15 +3/20)-5/24=
2,5 *(8/60 + 9/60) - 5/24=
5/2 * 17/60 - 5/24=
17/24 - 5/24 = 12/24 = 1/2