Odpowiedź:
a) (3a + 4b) – ( 5a+2b) = 3a + 4b - 5a - 2b = -2a + 2b
b) 5a – (2a – 2b) +4b = 5a - 2a + 2b + 4b = 3a + 6b
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Odpowiedź:
a) (3a + 4b) – ( 5a+2b) = 3a + 4b - 5a - 2b = -2a + 2b
b) 5a – (2a – 2b) +4b = 5a - 2a + 2b + 4b = 3a + 6b