x = 16.
Hope this helps!
Answer:
16
Step-by-step explanation:
In similer triangles, you want to find how much it is reduced or enlarged by, in this case you know that 20/5 is 4 and 12/3 is 4 so you know that x/4 must be 4. So you solve this by doing 4 × 4 which equals 16.
