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OpenStudy (anonymous):
Find the value of x so that the mean of { 5x, 3/2x, x+9, -x} is -1
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Vocaloid (vocaloid):
[5x + 3/2x + x + 9 - x]/4 = -1 solve for x
OpenStudy (anonymous):
i cant even do that
Vocaloid (vocaloid):
just add them up
Vocaloid (vocaloid):
5x + 3/2x + x + 9 - x = ?
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