Odpowiedź:
A = - 3 - 6 =-9
B= - 4 - 1 = - 5
C = 2 + 6 =8
D =4 - 2 =2
XA - 2XB =CD
X(A - 2B) = CD
X = CD/(A-2B)
X = 16/(-9-10) = 16/(-19) = - 16/19
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Odpowiedź:
A = - 3 - 6 =-9
B= - 4 - 1 = - 5
C = 2 + 6 =8
D =4 - 2 =2
XA - 2XB =CD
X(A - 2B) = CD
X = CD/(A-2B)
X = 16/(-9-10) = 16/(-19) = - 16/19