5x + 9z + 15
Work Step by Step
To find the perimeter, we write it as a sum of the length of each side. Then, combine like terms. 7 + 5z + 3x + 8 + 4z + 2x = 3x + 2x + 5z + 4z + 7 + 8 = 5x + 9z + 15
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