Answer:
x = 1.2
Explanation:
Essentially, because ABCDE and JKLMN are similar, their corresponding sides have a common ratio. To find x, we can simply the ratio between NJ and its corresponding side equal to the ratio of another pair of corresponding sides.
3x = 3.6
x = 1.2
T-T this took waaaaaay too long to be helpful but I hope it is anyways!