We want to use the Substitution method to solve
7x - 2y = 1          (1)
x - 2y = 1           (2)
From equation (1), obtain
2y = 7x - 1          (3)
Substitute (3) into (2).
x - (7x - 1) = 1
-6x + 1 = 1
-6x = 0
x = 0
From (3), obtain
2y = 7*0 - 1 = -1
y = -1/2
Answer: (0, -1/2)  or x=0, y= -1/2.
        
             
        
        
        
Answer:
If each book cost $20.45 then you times it by 21 and the answer you would get is 429.45
Step-by-step explanation:
im 99% that its correct
 
        
                    
             
        
        
        
Answer:
Subtract 58 from both sides
Step-by-step explanation:
93 = x + 58
Subtract 58 from both sides
93- 58 = x+58-58
35 = x
 
        
                    
             
        
        
        
The answer is 2/3 (i think ✨)