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x in (-oo:+oo)
x/37.5 = 4 // - 4
x/37.5-4 = 0
0.02666667*x-4 = 0 // + 4
0.02666667*x = 4 // : 0.02666667
x = 4/0.02666667
x = 149.99998125
x = 149.99998125
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