August 2018 2 20 Report
Układy równań

a){x+2y=-2
{2x-y=1 to jest wszystko w jednej klamerce

b) {x+4y=-2
{3x-8y=10

c) {x-2y=3
{-2x+y=0

{2x+y=9
{5x-4y+3
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