September 22nd, 2015, 10:34 AM  #1 
Newbie Joined: Sep 2015 From: Somewhere Posts: 17 Thanks: 0  Can someone explain this to me please? http://s16.postimg.org/ds5koq7c5/asdasdsaadas.png Why is the product a negative? Isn't both negative leads to positive? I have a problem also that the product became negative what does it mean? Plzzz explain 
September 22nd, 2015, 10:38 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,977 Thanks: 1571 
It's not a product ... it's subtraction.

September 22nd, 2015, 11:49 AM  #3 
Senior Member Joined: Apr 2014 From: Europa Posts: 584 Thanks: 177  $\displaystyle \dfrac{7}{8}\left(\dfrac{5}{6} \right)= \dfrac{7}{8} + \dfrac{5}{6} = \dfrac{5}{6}\dfrac{7}{8}$ 
September 22nd, 2015, 11:04 PM  #4 
Newbie Joined: Sep 2015 From: Somewhere Posts: 17 Thanks: 0  
September 22nd, 2015, 11:05 PM  #5 
Newbie Joined: Sep 2015 From: Somewhere Posts: 17 Thanks: 0  
September 22nd, 2015, 11:34 PM  #6 
Global Moderator Joined: Dec 2006 Posts: 20,805 Thanks: 2150 
Call what? Note that $(\frac56) = (1)(\frac56) = \frac56$, so the two negatives have produced a positive. The final answer is negative because 7/8 is greater than 5/6. 
September 22nd, 2015, 11:40 PM  #7 
Newbie Joined: Sep 2015 From: Somewhere Posts: 17 Thanks: 0  Oh! Thank you! Last edited by skipjack; September 22nd, 2015 at 11:47 PM. 
September 23rd, 2015, 11:55 AM  #8 
Newbie Joined: Sep 2015 From: Somewhere Posts: 17 Thanks: 0 
I don't really get it is that some kind of rule? i always get the right answer but not the negative sign or positive sign one (( (
Last edited by sadmath; September 23rd, 2015 at 11:59 AM. 
September 23rd, 2015, 12:19 PM  #9 
Math Team Joined: Jul 2011 From: Texas Posts: 2,977 Thanks: 1571 
$\dfrac{7}{8} + \dfrac{5}{6}$ First, get a common denominator ... $\dfrac{21}{24}+\dfrac{20}{24} = \dfrac{1}{24}$ ... when combining two values with opposite signs, subtract and keep the sign of the greater value. 
September 23rd, 2015, 11:22 PM  #10  
Newbie Joined: Sep 2015 From: Somewhere Posts: 17 Thanks: 0  Quote:
Ok now I get it it is negative because the positive one is smaller than the negative right? that's the kind of explanation im finding thank you now my classmates wont tease me anymore  

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