Odpowiedź:
4. A) 2x + 5 - x + 4 = x + 9
B) 3x + 4 - 2x - 3 = x + 1
C) 3 - 2x - 3 + 2x = 0
D) 2x - 4 - (30x - 150/5) = 2x - 4 - 6x + 30 = -4x + 26
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Odpowiedź:
4. A) 2x + 5 - x + 4 = x + 9
B) 3x + 4 - 2x - 3 = x + 1
C) 3 - 2x - 3 + 2x = 0
D) 2x - 4 - (30x - 150/5) = 2x - 4 - 6x + 30 = -4x + 26