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Sehingga,
Ambil:
-4 = 4y
y = -1
2z - 2 = 6
2z = 8, didapat z = 4
y - 4 = x
x = -1 - 4
x = -5
3x + 3 = 6a
x + 1 = 2a
-5 + 1 = 2a
2a = -4
a = -2
Untuk array yang lain (Mungkin soalnya terjadi salah tulis sehingga tidak ada variabel b)
2z + 6 = -8
2z = -14
z = -7