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2009-11-23T18:35:22+01:00
{x+y=-4
{2x-3y=2
x=-4-y
2(-4-y)-3y=2

x=-4-y
-8-2y-3y=2

x=-4-y
-5y=10|/-5

x=-4-y
y=-2

x=-4+2
y=-2

x=-2
y=-2
  • Użytkownik Zadane
2009-11-23T18:35:33+01:00
X+y=-4 | *(-2)
2x-3y=2

-2x - 2y = 8
2x - 3y = 2
+---------------

-5y = 10
y = -2

x - 2 = -4
x = -2
y = -2
2009-11-23T18:36:24+01:00
X=-4-y
2x-3y=2

x= -4-y
2*(-4-y) - 3y=2

x=-4-y
-8 - 2y-3y=2

x= -4-y
- 5y=10

x=-4-y
y=-2

x=-4--2
y=-2

x=-2
y=-2