Rozwiaz metoda przeciwnych wspolczynnikow.
5x-2y=21
3x+5y=-6
Z gory dziekuje i pozdrawiam ;)
5x-2y=21 /*5
3x+5y=-6 /*2
25x-10y=105
6x+10y=-12
____________
31x=93 / :31
x=3
15-2y=21
-2y=6 /:(-2)
y=-3
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5x-2y=21 /*5
3x+5y=-6 /*2
25x-10y=105
6x+10y=-12
____________
31x=93 / :31
x=3
x=3
5x-2y=21
x=3
15-2y=21
x=3
-2y=6 /:(-2)
x=3
y=-3