Rozwiąż układy równań metodą przeciwnych współczynników:3x-1/3y=2-9x+7y=123x+0,25y=-15x+2y=11
3x-1/3y=2/*3-9x+7y=12
9x-y=6
-9x+7y=12
------------
6y=18/6
y=3
-9x+7*3=12
-9x=12-21
-x=-9/-9
x=1
y=33x+0,25y=-1/*-85x+2y=11
-24x-2y=8
5x+2y=11
-----------
-19x=19/-19
x=-1
5*(-1)+2y=11
-5+2y=11
2y=11+5
2y=16/2
y=8
3x-1/3y=2 / :3-9x+7y=12
9x -1y = 6
-9x +7y= 12
6y= 18 / :6
y= 3
3x - 1/3*3= 2
3x-1=2
3x+0,25y=-1 / *(-8)5x+2y=11
-24 -2y= 8
5x +2y= 11
-19x= 19 / :19
x= -1
5*(-1)+ 2y= 11
-5 +2y= 11
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3x-1/3y=2/*3
-9x+7y=12
9x-y=6
-9x+7y=12
------------
6y=18/6
y=3
-9x+7*3=12
-9x=12-21
-x=-9/-9
x=1
x=1
y=3
3x+0,25y=-1/*-8
5x+2y=11
-24x-2y=8
5x+2y=11
-----------
-19x=19/-19
x=-1
5*(-1)+2y=11
-5+2y=11
2y=11+5
2y=16/2
y=8
x=-1
y=8
3x-1/3y=2 / :3
-9x+7y=12
9x -1y = 6
-9x +7y= 12
6y= 18 / :6
y= 3
3x - 1/3*3= 2
3x-1=2
y=3
x=1
3x+0,25y=-1 / *(-8)
5x+2y=11
-24 -2y= 8
5x +2y= 11
-19x= 19 / :19
x= -1
5*(-1)+ 2y= 11
-5 +2y= 11
y=8
x= -1