Answer:
3x + 2
Step-by-step explanation:
6x + 1 - (3x-1) < distribute the negative sign into the expression
6x + 1 -3x + 1 < combine like terms
6x - 3x = 3x
1 + 1 = 2
our simplified expression is:
3x + 2
the easiest way I find a midpoint of two points is the midpoint theorem, here it is:

For x and y plug in the two coordinates given, (4,-4) & (0,8)
so once you plug the numbers into the equation you would get:
(2,2)
You need to simplify it
lets start with your orgininal equation here:
-5+3x=10
Now lets try and get "x" alone. we will do this by adding 5 to both sides.
-5+3x=10
+5 +5
3x=15
Now we have 3 times "x" equals 15
The next step would be to divide both sides by 3 in order to get "x" alone.
3x=15
x=15/3
x=5