5x-3=22 since what you do to one side you must do for the other, add the 3 to both sides 5x-3=22 +3 +3 then you get 5x=25 since you are multiplying with the 5x (or 5 times x) you divide on both sides. 5x divided by 5x is x x=25 then you have to do it on the other side too 25 divided by 5 and you get x=5 Hope this helps! Let me know if I need to explain it further!
