Jawapan

2016-10-19T19:40:28+08:00
This is the answer using matrix
1 1 1
nak tau jwpn btul ke x boleh cek guna klkulator
yaaa tu lah jawapan die x=4..y=6
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2016-10-19T19:48:22+08:00
5x-4y=-4
x-2y=-8 (×5)

5×-10y=-40
5×-4Y=-4

(-) -6y=-36
y= -36/-6
Y=3

GANTIKN (y=3) dlm 5x-4y=-4
5x-4(3)=-4
5x-12=-4
5x=-4-12
5x=12
x=12/5
x=2.4 #

1 2 1
sorry klu salah . tp mcm tu la cara kira dia.
maaf jawapan awak salah