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Upraszczanie jednomianów i sum algebraicznych kl.7
Daje naj!!!!!!

7x + 5x + 4 =
-4x + 6x =
-5d + 3d - 20d =
-4t - 10t + 12t =
-6 - (-4a) - 8a =


Odpowiedź :

7x + 5x + 4 = 12x + 4

-4x + 6x = 6x - 4x = 2x

-5d + 3d - 20d = -2d - 20d = -22d

-4t - 10t + 12t = -14t + 12t = -2t

-6 - (-4a) - 8a = -6 + 4a - 8a = -4a - 6