October 2018 1 33 Report

tylko 3 przykłady!

Rozwiąż układy równań za pomocą metody podstawiania :

a) {x + 2y = 9

{y - 1 = 3x

b) { x - y = 5

{ x + 2y = -1

c) {x - y = 2

{ 1/2x - 1 = 1/4y


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