First, set up an equation that models this statement. 
N is your variable because it’s the unknown Number.
8n-13=43
Then, add 13 on both sides so you have the variable and it’s coefficient alone.
8n-13=43
 +13.+13
________
8n=56
Then, divide the variable and the coefficient by the coefficient.
8n=56
—. —
8. 8
Now you have your variable all by itself, and you have the persons number.
n=7
Your number is 7.
        
                    
             
        
        
        
Answer: Both 14, and 20
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1,3 2,2 3,4 4,1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
C) 14
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. 
First, add 6 to both sides: 
3x - 6 (+6) = 36 (+6)
3x = 36 + 6
3x = 42
Next, divide 3 from both sides: 
(3x)/3 = (42)/3
x = 42/3
x = 14
c) 14 is your answer.
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Answer: You can do this!
Step-by-step explanation: For D. The x= -1 and the y= 1 for E same thing the x= 7 and the y= 1 so look for the 7 on the x-axes and the one on the y-axes get it. I believe that you got this!
Hope this helped love<3