3x - 4y = 7 3x + 2y = -5 When the second equation is subtracted from the first, the resulting equation is
3x - 4y = 7 3x + 2y = -5 When the second equation is subtracted from the first, the resulting equation is -6y = 12 . 3x - 4y - (3x + 2y) = 7 - (-5) 3x - 4y - 3x - 2y = 12 -6y = 12
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Updated 4/22/2015 9:25:19 PM
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3x - 4y = 7 3x + 2y = -5 When the second equation is subtracted from the first, the resulting equation is -6y = 12 .
3x - 4y - (3x + 2y) = 7 - (-5)
3x - 4y - 3x - 2y = 12
-6y = 12
Confirmed by Andrew. [4/23/2015 5:15:46 AM]

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