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x in (-oo:+oo)
15/153 = x/81.6 // - x/81.6
15/153-(x/81.6) = 0
15/153-0.0122549*x = 0
5/51-0.0122549*x = 0 // - 5/51
-0.0122549*x = -5/51 // : -0.0122549
x = -5/51/(-0.0122549)
x = 8.00000163
x = 8.00000163
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