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nishalawinski nishalawinski
  • 09-11-2014
  • Mathematics
Answered

4x+8=7 I got -1/4 but don't know if you drop the negative when dividing

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luana
luana luana
  • 09-11-2014

\(4x+8=7\ \ \ \ | subtract\ 8\\\\ 4x=-1\ \ \ \ | divide\ by\ 4\\\\ x=-\frac{1}{4}\\\\ Solution\ is\ x=-\frac{1}{4}.\)

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Geekhawk
Geekhawk Geekhawk
  • 09-11-2014

4x+8=7
You minus 8 from each side
4x=-1
Divide -1 by 4x
The answer is \(- \frac{1}{4}\) or -.25
You leave the negative
If there is only one negative number(-1 being the case here) then its negative
If there are two negatives, its a positive
If there are two positive numbers, its positive

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