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OpenStudy (anonymous):
3x-9=-12 3x-9+9=-12+9 3x=-20 or 3x=20 x=20/3= what am i doing wrong
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OpenStudy (anonymous):
3x - 9 = -12 3x = -3 x = -1
OpenStudy (anonymous):
What you did wrong was that -12 + 9 is equal to -3
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