Odpowiedź:
a)
(2 : 0,3 - 5 1/3) : (0,25 - 2/3) = (2 : 3/10 - 5 1/3) : (1/4 - 2/3) =
= (2 * 10/3 - 5 1/3) : (3/12 - 8/12) = (20/3 - 5 1/3) : (-5/12) =
= (6 2/3 - 5 1/3) * (-12/5) = 1 1/3 * (-12/5) = 4/3 * (-12/5) = -4 * 4/5 = -48/15 =
= -3 3/15 = -3 1/5
b)
(2,6 : 1,2 - 4 1/2) : (0,75 - 1/3) = (26/10 : 12/10 - 4 1/2) : (3/4 - 1/3) =
= (26/10 * 10/12 - 4 1/2) : (9/12 - 4/12) = (13/6 - 4 1/2) : 5/12 =
= (2 1/6 - 4 3/6) * 12/5 = -2 2/6 * 12/5 = -14/6 * 12/5 = -14 * 2/5 = -28/5 =
= -5 3/5
Szczegółowe wyjaśnienie:
