Answer: 
y= -1
Explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
 
        
                    
             
        
        
        
Y = -10 and x = -13 (substitute 2y + 7 for x)
        
             
        
        
        
Answer:
Hi there! 
The answer to this question is:
Standard: y= x- (cube root) z
the leading coefficient: 1
 
Step-by-step explanation:
when identifying a polynomial you always need to know the standard equation, and leading coefficient.
-you first need to know what "y" so you move y to the other side by adding it on both sides
-then you need to get y by itself and cube root it on both sides resulting in x^3 becoming x and z becoming (cube root) z
 
 
        
             
        
        
        
Answer:
13
Step-by-step explanation:
We can add 1 to both sides of the second equation and divide by 2 to get 
x = (y-1)/2 
We can then substitute x in the first equation to get 
(y-1)/2 + 7 = 2y
Multiply by 2
y-1 + 14 = 2y 
Subtract y and combine like terms 
y = 13 
 
        
             
        
        
        
Answer:
That would equal  or approximately 0.67. If this helps, please rank Brainliest. Thanks!
 or approximately 0.67. If this helps, please rank Brainliest. Thanks!