Answer:
z=0
Step-by-step explanation:
if the equation was 1/4(3z)7=-1z
 
        
             
        
        
        
20% of $19,400 is $3,880
($19,400 / 5 = $3,880)
subtract 20% from the original value
($19,400 - $3,880 = $15,520)
it's now worth $15,520
        
             
        
        
        
Answer:
Step-by-step explanation:

 
        
                    
             
        
        
        
Answer:
(-6,2)
Step-by-step explanation: