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x in (-oo:+oo)
x/2.004-(x/5.128) = 100 // - 100
x/2.004-(x/5.128)-100 = 0
x/2.004-0.1950078*x-100 = 0
0.3039942*x-100 = 0 // + 100
0.3039942*x = 100 // : 0.3039942
x = 100/0.3039942
x = 328.95364451
x = 328.95364451
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