Question

Himpunan penyelesaian dari x = 11 - 3y dan 2x - y =1

Answer 1

X = 11-3y 2x - y = 1 2(11-3y) - y = 1 22-6y-y = 1 22-7y=1 -7y = -21 y = 3 x = 11-3y x = 11-3(3) x= 11-9 x = 2 jadi... x=2 dan y=3

Answer 2

X = 11 - 3y /dikali2/ 2x = 22 - 6y
2x - y = 1 (dipindah ruas) 2x = y + 1

2x + 6 y = 22
2x - y  = 1 (dikurangi)
= 7y = 21, y= 3

x = 11 - 3y = 11 - 3.3 = 11 - 9 = 2

hp = {(2,3)}

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