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3x + 2y -1 = 0 |×3| 9x + 6y - 3 =0
------------ -
-5x -15 = 0
-5x-15 =0
-5x= 15
x = 15/-5
x = -3
2x + 3y -9 =0
2 (-3) + 3y-9 =0
-6-9 +3y = 0
-15 = -3y
y = -15/ -3
y = 5