August 2018 1 15 Report
Rozwiąż metodą podstawiania poniższe układy równaŃ :

A) {5x+2y= 2,7
{ x+5y=1

b) {2x+y= 2½
{ 3x+4y=5

c) {½x - ¼ y = 4
{⅔x + ½ y=2

d) {2x+4y=-7
{4x-3y=8


; )
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