September 2018 2 12 Report

Rozwiąż układy równań .

a) y - x = 4

3 (x+y) = 24

b) x - 2y = 4

x + 3 = 2y

c) ½ (x-1) + y = -2½

x - 7 = 1 - y

Proszę o rozwiązanie ! Pilneee ! : (


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