How do I solve this absolute value equation?
-10-|10n+8|=-78
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OpenStudy (anonymous):
-10-(10n+8)=-78
and
by switching the signs of everything
-[-10-(10n+8)]=-78
OpenStudy (avai70178):
okay but what happens with the negative in front of the absolute value?
OpenStudy (anonymous):
I mean switching the signs of the side with variable in it.
zepdrix (zepdrix):
\[\large\rm -10-|10n+8|=-78\]Should probably add 10 to each side before dealing with the signs that the absolute value gives us :)\[\large\rm -|10n+8|=-68\]
OpenStudy (anonymous):
You make it into parentheses, so just ignore the absolute value
Negative times negative makes it positive
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OpenStudy (avai70178):
oh okay i see. Thank you so much! :)
OpenStudy (anonymous):
Did you get your first and second solution?
OpenStudy (avai70178):
not yet one sec
OpenStudy (avai70178):
10n+8=+or- 68
right so far?
OpenStudy (anonymous):
Yea that is correct.
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OpenStudy (avai70178):
i got n=-38/5 and n=6
OpenStudy (anonymous):
the -68 involves a fraction.
OpenStudy (anonymous):
Yea, I got that too.
OpenStudy (anonymous):
Nice job!
OpenStudy (avai70178):
Thanks! You really helped! :D
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