Solve simultaneously:
<span>15x-8y=52 and 
6x+14y=38
</span>
Let's solve this system thru elimination by addition/subtraction:
Let's get rid of the x terms.
To do this, mult. the first eqn. by -6 and the second by 15.  (This is not the only way in which we can do this!!)  We get  
-90x + 48y = -312
90x   +210y = 570
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Add all 3 columns together.  We end up with:
258y = 258, so y = 1.  You can find x by subst. 1 for y in either of the given equations.
If you'd like more help, please be specific about what you want.
        
             
        
        
        
Answer:
6 2/3 minutes
Step-by-step explanation:
3 hours on frames  3 x 60 = 180 minutes total
180/27 frames = 6.66667 or 6 2/3 minutes.
 
        
             
        
        
        
75% of the skittles are not red. 
This is figured out by dividing 12 by 48. So you get .25 (25%) of the skittles are red, yeah? After that, you just subtract 25 from 100, and boom! 75% of the skittles are not red.