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Verified answer
Bab Persamaan GarisMatematika SMP Kelas VIII
ax + by = c, sejajar, (p, q)
ax + by = ap + bq
2x - 10y = 3, sejajar, (4, -1)
2x - 10y = 2 . 4 - 10 . (-1)
2x - 10y = 8 + 10
2x - 10y = 18
x - 5y = 9