Answer: x=30 (Sorry for wasting your time if the answer is wrong)
Step-by-step explanation:
I did it the lazy way
80-20=60
60÷2=30
(If this is completely wrong then again, sorry)
 
        
             
        
        
        
1.   Y=4
2.  Y=2
3.  Y=X
4.  Y=2
(X,Y)
i hope this helps
Step-by-step explanation:
 
        
             
        
        
        
Answer:
what you marked blue is right
Step-by-step explanation:
I think
 
        
             
        
        
        
Answer:
mE=mC
mD=mB
Step-by-step explanation:
thats should be correct