rozwiaz metoda przeciwny wspolczynnikow
2x + 5y = 8
3x - 2y = -7
2x + 5y = 8 /*(-3)
3x - 2y = -7 /*2
-6x-15y=-24
6x-4y=-14
-19y=-38
y=2
2x+5*2=8
x=-1
spr
2*(-1)++5*2=8
-2+10=8
8=8
3x - 2y = -7 /
3*(-1)-2*2=-7
-3-4=-7
-7=-7
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2x + 5y = 8 /*(-3)
3x - 2y = -7 /*2
-6x-15y=-24
6x-4y=-14
-19y=-38
y=2
2x+5*2=8
x=-1
y=2
x=-1
spr
2x + 5y = 8
2*(-1)++5*2=8
-2+10=8
8=8
3x - 2y = -7 /
3*(-1)-2*2=-7
-3-4=-7
-7=-7