Question

A photo is 4 inches wide. It is placed inside a frame with a border that is x inches wide. The total width of the photo and the frame is 7 inches. Write an equation to model the situation, then solve the equation to find the width of the border.

Answer 1

4 + 2x = 7
2x = 7 - 4 = 3
x = 3/2 = 1.5 inches