Rainbowmellorans
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x-y=5 2x + y = 4 denklem sistemini sağlayan (x, y) sıralı ikilisi aşağı- dakilerden hangisidir? A) (4.3 B) (3,2 C) (3,-2) D) (2, -3) E) (-2,3)​

Sagot :

Cevap:

Taraf tarafa toplarız;

x-y=5

2x+y=4

_______

3x=9 x=3

x-y=5

3-y=5

-y=2

y=-2

(3,-2)

Cevap C

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