Answer:
bro can u see the answers?
the answer is -65y+11x/10
Step-by-step explanation:
 
        
             
        
        
        
Answer:
81.1 is the answer ..,eksks
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
substitute the value of y in the first equation.
7x-3(5x-4)=20
7x-15x+12=20
 -8x=20-12
 x=8/-8
 x= -1
then you substitute the value of x on the y equation to find y 
y=5×-1 -4
y= -5-4
y= -9