Homework Help: math

Posted by Anonymous on Wednesday, September 22, 2010 at 11:04pm.

Please solve
-2x+7>22
-2x+7-7>22-7
-2x>15
-2x/(-2)<15/(-2) Switching the order of the inequality here is essential to keep the solutions true for the inequality since I divided by a negative #.
x<-7.5

math - PsyDAG, Thursday, September 23, 2010 at 12:07pm
Again, you forgot to reverse the carat, when dividing by -2.

x > -7.5

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