Problema Solution
A square plywood platform has a perimeter which is 7 times the length of a side, decreased by 18. Find the length of a side.
Answer provided by our tutors
the perimeter is the sum of each side, so let 'x' represent the length of a side and '4x' is the perimeter
the perimeter is 7 times the length of a side, decreased by 18:
4x = 7x - 18
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x=6
The length of a side is 6 [presumably feet, perhaps inches, etc. - units have not been specified]