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16.28*x-((8.25*y^2)/2) = 0
16.28*x-4.125*y^2 = 0
16.28*x-4.125*y^2 = 0 // + -4.125*y^2
16.28*x = -(-4.125*y^2) // : 16.28
x = (-(-4.125*y^2))/16.28
x = 0.25337838*y^2
x = 0.25337838*y^2
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