2. Спрости вираз.
a) 2a + 6a =
б) x-5 + 2x + 4 =
в) -a +xy +7a-3xy =
г) 9x - 3(3.x - 4) =
a) 2a + 6a =
б) x-5 + 2x + 4 =
в) -a +xy +7a-3xy =
г) 9x - 3(3.x - 4) =
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Ответ:
Объяснение:
а) 2a + 6a = 8a
б) x-5 + 2x + 4 = 3x - 1
в) -a +xy +7a-3xy = 6a - 2xy
г) 9x - 3(3.x - 4) = 9x - 9x + 12 = 12