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x in (-oo:+oo)
x/5.4 = 11.5 // - 11.5
x/5.4-11.5 = 0
0.18518519*x-11.5 = 0 // + 11.5
0.18518519*x = 11.5 // : 0.18518519
x = 11.5/0.18518519
x = 62.09999839
x = 62.09999839
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