August 2018 3 11 Report
Zapisz w jak najprostrzy sposób:
a)(x-2)-(2-x)
b)(a+b)+(2a-b)-(a-2b)
c)(3x-y+1)-(x+y)+(y-x)
d)-(2a² - 3ab)-(2b-3a²)+(-ab-b)

bardzo prosze o rozwiązanie i odpowiedz
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