Hello!!
So when we have 2x = 10 we are looking for what x equals. This means you'll want to eliminate what you can to get your answer. What you do on one side must be done on the other. Let's give that a go, sha'll we?
2x = 10
We need to use the inverse operation to eliminate a factor. Since 2x is 2 times x we'll have to divide it.
2x/2 = 10
2 divided by 2 cancels each other out and leaves us with the following;
x = 10
So, x = 10
I hope I helped!!