From what i interpreted this question as... this is what i got and i hope i helped a bit
If you want to eliminate x than multiply equation 1 by 4 and equation 2 by 3 and subtract them or,
If you want to eliminate y than mutiply equation 1 by 8 and equation 2 by 11 and subtract them.
11 * 11 * 6 = 726 square inches
Answer:
well you didn't show problem 11 but here is a pretty photo of Port orford Oregon