Metodą podstawiania
2(x+1)-4y+7=-2y 2x+3y=6
2X+2-4Y+7=-2Y
2x+3y=6
2x=2y-9
2y-9+3y=6
5y=15
y=3
2x=2*3-9
2x=-3
x=-1,5
2x+2-4y+2y=-7
2x-2y=-9
2x+3y=6/:2
x+1,5y=3
x=3-1,5y
2(3-1,5y)-2y=-9
6-3y-2y=-9
-5y=-15/:(-5)
x=3-1,5*3
x=3-4,5
licze na naj ;d
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2X+2-4Y+7=-2Y
2x+3y=6
2x=2y-9
2x+3y=6
2y-9+3y=6
5y=15
y=3
2x=2*3-9
y=3
2x=-3
x=-1,5
y=3
2(x+1)-4y+7=-2y
2x+3y=6
2x+2-4y+2y=-7
2x+3y=6
2x-2y=-9
2x+3y=6/:2
2x-2y=-9
x+1,5y=3
2x-2y=-9
x=3-1,5y
2(3-1,5y)-2y=-9
6-3y-2y=-9
-5y=-15/:(-5)
y=3
x=3-1,5y
x=3-1,5*3
x=3-4,5
x=-1,5
licze na naj ;d