October 2018 1 38 Report

Rozwiąż równania metoda przeciwnych współczyników e) 4x - y = 3 x + y = 7 f) 3x - y = -5 5x - y = -7 g) 3x + y = 1- 2x - y =10 h) 2x - 2 =1- x+ 2y = 20


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