You would distibute first distribute 
6x-10=8
add 10 on both sides 
6x=18
Then you divide 6 on both sides to get x by itself so 
x=3
 
        
             
        
        
        
Since the slope is -2, then m=-2. Since the y-intercept is 5, b=5. Then, we can create the equation: y=-2x+5
Since the slope is  , then m=
, then m= . Since the y-intercept is -3, b=-3.
. Since the y-intercept is -3, b=-3. 
Then, we can create the equation: y= x-3
x-3
 
        
             
        
        
        
Answer:
HOLAAAAAO
Step-by-step explanation:
 
        
             
        
        
        
A+b=(-3n+2)+(5n-7)
=(5-3n)+(2-7)
=2n-5
Came up with the same answer as the first guy