September 2018 1 29 Report

Zapisz w jak najprostszej postaci.
a)(x-2)-(2-x)
b) (a+b)+(2a-b)-(a-2b)
c) (3x-y+1)-(x+y)+(y-x)
d) -(2a/2 -3ab)-(2b-3a/2)+(-ab-b)


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