Difference between x+=dx and x=x+dx?

Question

Is there any difference between x+=dx and x=x+dx? I am curious if these equations might effect code differently?

Answer 1

its the same

Answer 2

it will be just fast to write it..if the variable name is toooo long.

Answer 3

That's what I thought. Thank you both!

Answer 4

it is same but time required to do x+=dx is less because there is no multiple declaration of x