Explanation: 20-2.4=17.6 feet That is the length of the wall not counting the painting. 17.6/2=8.8 8.8 is the measurement of one side of the painting to the end of the wall.
Step-by-step explanation:x squared is one x.you then add the X's to get 2x.then you subtract the five on the other side to get 2x=6.after you get that you divide both sides by 2 to get x=3
