October 2018 2 39 Report

Wyrażenia algebraiczne, kl. 6

Zapisz krócej (licz sprytnie):

a) -17x - 15x - 13x - 10x + 10x + 13x + 15x + 17x =

b) -10x - 8x - 6x - 2x + 2x + 4x + 6x + 8x =

c) -123x + 55x - 39x + 23x - 155x + 139x =


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