Your answer would be D=10 because you move the like terms Move variable to the left-hand side and change its sign then Move constant to the right-hand side and change its sign then calculate the difference last thing you do is Divide both sides of the equation by
To find the midpoint, add the x values and y values respectively. Then divide the results by 2. So, the midpoint of CD will be (0.5,5.5). The x value is 0.5.