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y-2x=6
3 + x - 2x = 6
3 - x = 6
- x = 6 - 3 = 3
x = - 3
y = 3 + x
y = 3 - 3 = 0
odp
x = - 3 , y = 0
-2x+y=-5
y-6=3x to y = 3x + 6 wstawiamy do pierwszego
- 2x + 3x + 6 = - 5
x = - 5 - 6 = - 11
- 2 * - 11 + y = - 5
22 + y = - 5
y = - 5 - 22 = - 27
odp
x = - 11 , y = - 27
y-2x=6
y=3+x
3+x-2x=6
y=3+x
-x=6-3
y=3+x
-x=3/*(-1)
y=3+x
x= -3
y=3+(-3)
x= -3
y=3-3
x= -3
y=0
x= -3
-2x+y=-5
y-6=3x
-2x+y= -5
y=3x+6
-2x+3x+6= -5
y=3x+6
x= -5-6
y=3x+6
x=-11
y=3*(-11)+6
x= -11
y=-33+6
x= -11
y= -27