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x in (-oo:+oo)
x/2.4 = 3/8 // - 3/8
x/2.4-(3/8) = 0
x/2.4-3/8 = 0
0.41666667*x-3/8 = 0 // + 3/8
0.41666667*x = 3/8 // : 0.41666667
x = 3/8/0.41666667
x = 0.89999999
x = 0.89999999
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