SOLUTION: {{{vertical line x vertical line - 1=8}}} please help with this problem I need to work it out. thank you

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Question 39120This question is from textbook Basic Technical Mathematics
: vertical+line+x+vertical+line+-+1=8
please help with this problem
I need to work it out.
thank youThis question is from textbook Basic Technical Mathematics

Answer by fractalier(2101) About Me  (Show Source):
You can put this solution on YOUR website!
Ah, I know what you mean...
|x| - 1 = 8
|x| = 9
therefore
x = 9 or x = -9