podstawiani;
x=y x=y
5x-y=7 6x-y=5
Rozwiąż układ metodą przeciwnych wspułczynników;
4x+3Y=2
i 3x+2y=2
5x+2y=2
7x+6Y=2
x=y
5x-y=7 5x-x=7
4x=7
x=7/4
y=7/4
6x-y=5 6x-x=5
5x=5
x=1
y=1
4x+3y=2 /*(-7)
7x+6y=2 /*4
-28x-21y=-14
+ 28x+24y=8
--------------------
3y=-6
y=-2
4x+3(-2)=2
4x=8
x=2
3x+2y=2
5x+2y=2 /*(-1)
+-5x-2y=-2
-------------
-2x=0
x=0
3*0+2y=2
3x+2y=2/(-1) 5x+2y=2
5x+2y=2 2y=2
-3x-2y=-2 y=1
2x=0
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x=y
5x-y=7 5x-x=7
4x=7
x=7/4
x=7/4
y=7/4
x=y
6x-y=5 6x-x=5
5x=5
x=1
x=1
y=1
4x+3y=2 /*(-7)
7x+6y=2 /*4
-28x-21y=-14
+ 28x+24y=8
--------------------
3y=-6
y=-2
4x+3(-2)=2
4x=8
x=2
x=2
y=-2
3x+2y=2
5x+2y=2 /*(-1)
3x+2y=2
+-5x-2y=-2
-------------
-2x=0
x=0
3*0+2y=2
y=1
x=0
y=1
3x+2y=2/(-1) 5x+2y=2
5x+2y=2 2y=2
-3x-2y=-2 y=1
5x+2y=2
2x=0
x=0