October 2018 2 18 Report
Zad 7. Jaka liczba jest n, jeśli



b) 7^n : (1/7)^8 = 7^-12

c) 9 x 3^n x (1/3)^-3 = 3^-4

d) 1/121 x 11^-4 : 11^n = 1


proszę o pomoc nie mogę tego rozwiązać


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