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20.5 = (w/3600)*x^703 // - (w/3600)*x^703
20.5-((w/3600)*x^703) = 0
-1/3600*w*x^703 = -20.5 // : -1/3600*w
x^703 = 73799.40960472*w^-1
x^703 = 73799.40960472*w^-1 // ^ 1/703
x = 73799.40960472^(1/703)*w^(-1/703)
x = 73799.40960472^(1/703)*w^(-1/703)
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