Question 342412
Hint: The area of the original photo is {{{A=w(w+2)}}} and the area of the new photo is {{{A+20=(w+2)(w+4)}}}. Solve for 'A' in the second equation to get {{{A=(w+2)(w+4)-20}}}. Now set the right sides of the two equations equal to each other to get {{{w(w+2)=(w+2)(w+4)-20}}}



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