3 y = 5x-10 ; 4x+5=-Y
5 z
(2 bel
bi
5x1-4x(-2)
5--8-5x8=13
2
1
Dx=ki bi
10-12 = 10x1)x(-2)=10
15-11-10=0
(2 62
Dy = al
Jaz
5.10 -5XC-5)-4x10
5/=-25-40 = -(5
(2 2
By coamies rule
x - DA
13
y y= Dy =
65 -- 5
13
Ans
96 (2, 9 (-5)
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