If N = 8
if M = 7
then the equation is 8(2) - 7
do the multiplication first 8(2) = 16
now do the subtraction 16 - 7 = 9
        
             
        
        
        
Answer:
1) 8x
2) 12x - 3y
Step-by-step explanation:
1) Both of them have a like term, so you can subtract them across
2) 10x + 2x = 12x, have a like term so you can add them across and 3y is the outlier so that stays alone.
Hope this helps!
 
        
                    
             
        
        
        
Answer:
4 books 
Step-by-step explanation:
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   A: 66/21
   E: 22/7
Step-by-step explanation:
The offered choices reduce to 3 1/7 or to 3. The best approximations of those given are the ones that reduce to 3 1/7.
   A: 66/21 = 22/7 = 3 1/7
   B: 60/20 = 3
   C: 21/7 = 3
   D: 45/15 = 3
   E: 22/7 = 3 1/7
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<em>Comment on pi approximations</em>
The ratio 22/7 differs from π by about 0.04%. A better approximation is 355/113, which differs from π by about 0.000008%. The approximation 3.14 differs from π by about 0.05%.
 
        
             
        
        
        
Answer:
Step-by-step explanation: