5x-y=1,5
3x+6y=-9
tylko dobrze prosze
3x=-9-6y/:3
x=-3-2y
5(-3-2y)-y=1,5
-15-10y-y=1,5
-11y=1,5+15
-11y=16,5/:(-11)
y= -1,5
x=-3-2*(-1,5)
y=-1,5
x=-3+3
x=0
3x+6y=-9/:6
0,5x+y=-3/2
4,5x=3
x=2/3
3*2/3+6y=-9
2+6y=-9
6y=-11
y=-6/11
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5x-y=1,5
3x+6y=-9
5x-y=1,5
3x=-9-6y/:3
5x-y=1,5
x=-3-2y
5(-3-2y)-y=1,5
x=-3-2y
-15-10y-y=1,5
x=-3-2y
-11y=1,5+15
x=-3-2y
-11y=16,5/:(-11)
x=-3-2y
y= -1,5
x=-3-2*(-1,5)
y=-1,5
x=-3+3
y=-1,5
x=0
5x-y=1,5
3x+6y=-9/:6
5x-y=1,5
0,5x+y=-3/2
4,5x=3
x=2/3
3*2/3+6y=-9
2+6y=-9
6y=-11
y=-6/11