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July 7, 2015

Homework Help: math help needed

Posted by alisha on Saturday, October 25, 2008 at 2:32pm.

the question is:

-3x-2z-7
if x=3 and z= -1

i did the the question and got the answer - 14 ....but the answer key that i got say -20....can anyone help me... with this plz....

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