August 2018 3 7 Report
1.zapisz jak najprostszej postaci:
a) (a+b)-(2a-b)-(a-2b)
b)(3x-y+1)-(x+y)+(y-x)
c) -(kx+ny)-(3kx+2ny)+(5kx-3ny)
proszę potrzebne na jutro mi to!!
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