Question

has an endpoint at (25, -5) and a midpoint of (18, -1). What is the value of the x-coordinate of the other endpoint?

Answer 1

Try solving for x here.
\[18 = \frac{x + 25}{2}\]

Answer 2

1.44???

Answer 3

How did you get that?

Answer 4

divided 25 by 2 then divided 18 by that number

Answer 5

Ok. FIrst of all, what is the opposite of division?

Answer 6

\[18 = \frac{x + 25}{2}\]\[18 \times 2 = \frac{x + 25}{2}\times \frac{2}{1}\]\[36 = \frac{x + 25}{\cancel{2}1} \times \frac{\cancel{2}1}{1}\]\[36 = x + 25\]Can you solve for x now?