Answer:
x = 3
Step-by-step explanation:
7(x + 1) + 2 = 5x + 15
~Simplify left side
7x + 7 + 2 = 5x + 15
~Combine like terms
7x + 9 = 5x + 15
~Subtract 9 to both sides
7x = 5x + 6
~Subtract 5x to both sides
2x = 6
~Divide 2 to both sides
x = 3
Best of Luck!
 
        
             
        
        
        
Answer:
i think it's circumference 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
There are 12 students in each group
Step-by-step explanation:
87-39= 48 
48/4= 12
Hope this helped. ;)
 
        
                    
             
        
        
        
Hope this helps!
There are 3 images with full explanation
 
        
             
        
        
        
Answer:
the difference is 25
Step-by-step explanation:
to get from 10 to 0 is 10 units and from 0 to -15 is 15 
10+15 = 25