1) 2L + 2W = 228
2) L = 2W + 6
substitute eq(2) into eq(1):
2(2W + 6) + 2W = 228
4W + 12 + 2W - 228
6W + 12 = 228
6W = 216
W = 36 ft
using eq(2):
L = 2(36) + 6
L = 78 ft
check using eq(1):
2(78) + 2(36) = 228
228 = 228
The court is 36ft wide and 78ft long.