Question

23-x=x+11

Answer 1

2x = 12
x=6

Answer 2

x=6

Answer 3

i need an explanation

Answer 4

23-x=x+11
+x +x
23=2x+11
-11 -11
12=2x
/2 /2
x=6

Answer 5

First combine similar terms, i.e. terms with a variable and just plain numbers.
so...
23-11=x+x
that is just moving like terms to the same side.
then....
12=2x or 2x=12 (they are the same thing)
then
x=12/2
so x=6