Answer:
x+y=-5.75
Step-by-step explanation:
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Well, you would simply need to use the distributive property!
-(2)x-(2)2+(2)y-(2)9=1
-2x-4+2y-18=1
Then you need to add/subtract so the similar numbers are together.
-2x+2y-22=1
-2x+2y=23
x+2y=-11.5
x+y=-5.75
(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥
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21: The factors of 21 are 1,3,7,21
        
             
        
        
        
Answer:
<h2>y = 4x + 4</h2>
Step-by-step explanation:
The slope-intercept form:

m - slope
b - y-intercept
Parallel lines have the same slope.
We have y = 4x + 2 → m = 4.
The slope of parallel line is m = 4 and the y-intercept b = 4.
Therefore we have the equation of a line:

 
        
             
        
        
        
6x + 1 = 2x + 10 + 79
6x + 1 = 2x + 89
4x = 88
  x = 22