This on is very easy go to my website so i can explain it better for you
 <span>https://www.youtube.com/channel/UCaxhPMTZBmFcxAZ4hYpBf_w 
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Hope this 
        
             
        
        
        
Answer:
−30a−6
Step-by-step explanation:
Let's simplify step-by-step.
−9a−10−6a+7−9a−10−6a+7
=−9a+−10+−6a+7+−9a+−10+−6a+7
Combine Like Terms:
=−9a+−10+−6a+7+−9a+−10+−6a+7
=(−9a+−6a+−9a+−6a)+(−10+7+−10+7)
=−30a+−6
BRAINLIEST. if you don't mind.
 
        
             
        
        
        
Answer:
I think it's C. sjisebd ddhisuaja. usually get ebe. 
 
        
             
        
        
        
Answer:
239.92
Step-by-step explanation:
53.94×4=215.92
Then you do 21×2=24 then you take the 215.92 and the 24 and add them together and it gives you 239.92
 
        
                    
             
        
        
        
Answer:
Yes they do!
Step-by-step explanation:
Both fractions simplify into approximately 0.68
Hope this helps!