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b = 7,75 × (3,2 / -0,4) = -62
c = (12⅔ - 8¼) × pierw. z 2¼ = (38/3 - 33/4) x 3/2 = (152/12 - 99/12) x 3/2 = 4 całe i 5/12 x 3/2 = 53/12 x 3/2 = 6 ⅝
d = [(⅓)³ + (⅖)²] x 2 = (1/27 + 4/25) x 2 = (25/675 + 108/675) x 2 = 133/675 x 2 = 266/675 = 0,39407
V = 700 km/h
700 km - 60 min
x km - 15 min
(700 x 15) /60 = 175 km
Zadanka rozwiązane :) Pozdrawiam i polecam się na przyszłość:)