Rozwiąż układ równań
1)
{3x+2y=1
{2x+4y=-3
2)
{2x-y=-4
{-x+2y=5
6x+4y=2
-6x-12y=9
4y-12y=2+9
-8y=11
y=-1⅜
3x+2*(-1⅜)=1
3x=3¾
x=1¼
2x-y=-4
-2x+4y=10
-y+4y=-4+10
3y=6
y=2
2x-2=-4
2x=-2
x=-1
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1)
{3x+2y=1
{2x+4y=-3
6x+4y=2
-6x-12y=9
4y-12y=2+9
-8y=11
y=-1⅜
3x+2*(-1⅜)=1
3x=3¾
x=1¼
x=1¼
y=-1⅜
2)
{2x-y=-4
{-x+2y=5
2x-y=-4
-2x+4y=10
-y+4y=-4+10
3y=6
y=2
2x-2=-4
2x=-2
x=-1
x=-1
y=2