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4x + 5y = -34 (x3) 12x + 15y = -102
y = -62
⇒ 3x + 4y = -10
3x + 4(-62) = -10
3x + (-248) =-10
3x = -10 + 248
3x = 238
x = 238/3
x = 80
⇒ jadi (x=80, y=-62)
⇒ 8x + 3y = 8(80) + 3(-62)
= 160 + (-186)
8x + 3y = -26
Maaf jika salah. semoga membantu kak ;)