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x in (-oo:+oo)
275 = x-(275/0.75) // - x-(275/0.75)
275/0.75-x+275 = 0
641.66666667-x = 0 // - 641.66666667
-x = -641.66666667 // * -1
x = 641.66666667
x = 641.66666667
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