Answer:
w = 15
Explanation:
p = 2l + 2w
76 = 2(5x - 2) + 2(3x)
76 = (10x - 4) + (6x)
Combine like terms
76 = 16x - 4
add 4 to both sides
80 = 16x
Divide both sides by 16
5 = x
x = 5
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width
w = 3x
w = 3(5)
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