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0.724*x-(3.13*y)+5.81;102.92*y-3.13*x+676.62
0.724*x+3.13*y+5.81;102.92*y-3.13*x+676.62
2^x = 0
(4/5)*x-(7/13) = 69/65
(-4/6)*X = 2/3
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