Asked Feb 17, 2020

A mirror should be centered on a wall. The mirror is 4 feet wide and the wall is 20 feet wide. Which equation helps determine the distance x on each side of the mirror?
x + 4 + x = 20
4 + x + 4 = 20
x = 20 + 4 + 4
4 = 20 + x + x


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