Answer D. It is the closets answer to my calculations so im sorry if im wrong 
 
        
             
        
        
        
It helps you know what to multiply and the product when you subtracting and adding fractions.
        
             
        
        
        
Answer:
Hey there!
6 hrs 45 mins =  405 mins, or 6.75 hours.
Hope this helps :)
 
        
             
        
        
        
Answer:
(in the image)
Step-by-step explanation:
I'm not sure I understood your question completely but I hope this helps.
 
        
             
        
        
        
Answer:
x=1
Step-by-step explanation:
3(x+1)=-2(x-1)+6
3x+3=-2x+2+6
3x+2x=2+6-3
5x=8-3
5x=5
x=
x=1