Odpowiedź:
A)
-19,5 + 3,5 : (-1,4) = -19,5 - 2,5 = -22
B)
(-2)³ + (-8) : (-1) - (-35) : (-7) = -8 + 8 - 5 = -5
C)
2/5 - (- 2,25) • (-4/5) + 1,4 : (-3/5) = 2/5 - (-2 1/4) * (-4/5) + 1 2/5 * (-5/3) =
= 2/5 - (-9/4) * (-4/5) + 7/5 * (-5/3) = 2/5 - 9/5 - 7/3 = -7/5 - 7/3 = -1 2/5 - 2 1/3 =
= -1 6/15 - 2 5/15 = -3 11/15
Szczegółowe wyjaśnienie:
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Odpowiedź:
A)
-19,5 + 3,5 : (-1,4) = -19,5 - 2,5 = -22
B)
(-2)³ + (-8) : (-1) - (-35) : (-7) = -8 + 8 - 5 = -5
C)
2/5 - (- 2,25) • (-4/5) + 1,4 : (-3/5) = 2/5 - (-2 1/4) * (-4/5) + 1 2/5 * (-5/3) =
= 2/5 - (-9/4) * (-4/5) + 7/5 * (-5/3) = 2/5 - 9/5 - 7/3 = -7/5 - 7/3 = -1 2/5 - 2 1/3 =
= -1 6/15 - 2 5/15 = -3 11/15
Szczegółowe wyjaśnienie: