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x in (-oo:+oo)
0.36 = x-(63.7/0.8) // - x-(63.7/0.8)
63.7/0.8-x+0.36 = 0
79.985-x = 0 // - 79.985
-x = -79.985 // * -1
x = 79.985
x = 79.985
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