(3x-9) +(x+19)+x=180
5x+10=180
 -10=-10
 5x=170
 5 = 5
 x=34
2x+(2x+10)+x=180
5x+10=180
 -10=-10
 5x=170
 5 = 5 
 x=34
 yes they are similar
        
             
        
        
        
Answer:
The answer
Step-by-step explanation:
The expected value equation could only be
2x = 3y
 
        
             
        
        
        
<span>(-3,9)(0,0)
slope = 9 / -3 = -3
b = 0
equation
y = -3x</span>
        
                    
             
        
        
        
Answer:
c
Step-by-step explanation:
cuz ik