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OpenStudy (anonymous):
3x - 4y = 7 3x + 2y = -5 When the second equation is subtracted from the first, the resulting equation is _____.
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OpenStudy (anonymous):
You subtract each side of the equation. On the left hand side, you get \[ (3x - 4y) - (3x + 2y) = 3x - 4y - 3x - 2y = -6y. \]On the right hand side, you get \[ 7 - (-5) = -12. \]
OpenStudy (anonymous):
12, not -12.
OpenStudy (anonymous):
thank you
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