September 2018 2 15 Report

Proszę o szybką pomoc !!!!!

rozwiąż układ równań :

a) 2x - 3y = 1 b) x-y = 1 c) x- y = 17

x + 1/2 = -2 x + 2y = 4 2 (x-1) = 3y


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