Let the two numbers be x and y.
x + y = 86
+
x - y = 12
_________
2x + 0 = 98
__________
2x = 98
x = 98/2
 
x = 49
From    x + y = 86
49 + y = 86
y = 86 - 49
y = 37
The numbers are 49 and 37. 
        
             
        
        
        
1=5-4 because you have to substitute x and y (x,y) or (5,1)
        
             
        
        
        
Answer:$90,000
Step-by-step explanation:
3,000*30=90,000
 
        
                    
             
        
        
        
Answer:
( l+w)
Step-by-step explanation:
just did the question
 
        
                    
             
        
        
        





Seems like "6x+5=4x+5" has only one solution that's 0.