Answer:
x=10
Explanation:
You need to subtract 5 from both sides. So 5-5 = 0 and 25-5 = 20.
This leaves you with 2x=20.
What you do next is divide 2 from both sides. So 2 divided by 2 cancels out and leaves you with x and 20 divded by 20 leaves you with 10.
This gives you the answer of x=10
Hope this helps! :)