Question

Asked Feb 17, 2020

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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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