Question

|x|+5=18 5 or - 5 13 or - 13 18 or - 18 23 or - 23

Answer 1

Just transpose the 5 to the right side of 18 so it will look like this, /x/ = 18 - 5
Then get the difference and it would be 13. So to check this out if it is correct, substitute x for the value of 13 and it will look like this.
13 + 5 = 18
I hope my answer helped you.