Answer:
Step-by-step explanation:
Using the given measurements of the angles and the lengths of the sides, we can determine that this figure must be a <u>rectangle</u>.
Diagonals of a rectangle are <em>always</em> equivalent/congruent.
We can use this information to set up an equation:
Add 3 to both sides:
Subtract 5x from both sides:
Divide both sides by 2