Odpowiedź:
D) F + G + H=0
Szczegółowe wyjaśnienie:
F = a - (3a + 4) = a - 3a - 4 = -2a - 4
G = 2 * (4a + 3) - 3a = 8a + 6 - 3a = 5a + 6
H = -3 - (3a - 1) = -3 - 3a + 1 = -3a -2
A) F + G = H
-2a - 4 + 5a +6 = 3a +2
fałsz
B) F + H = G
-2a - 4 + (-3a - 2) = -2a -4 -3a -2 = -5a -6
fałsz
C) G + H = F
5a + 6 + (-3a - 2) = 5a + 6 - 3a -2 = 2a + 4
fałsz
D) F + G + H = 0
-2a - 4 + 5a + 6 -3a -2 = 0
prawda
