Odpowiedzi

2009-12-09T19:07:07+01:00
5x=4-2y
4x+y=3

5x+2y=4
4x+y=3 /*(-2)

5x+2y=4
-4x-2y=-6
--------------------dodajemy
x=-2

4x+y=3
y=3-4x
y=3-4*(-2)
y=11
2009-12-09T19:14:56+01:00
5x=4-2y
4x+y=3

5x+2y=4
4x+y=3 /*(-2)

5x+2y=4
-4x-2y=-6
____________
x=-2

4x+y=3
y=3-4x
y=3-4*(-2)
y=11



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