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x in (-oo:+oo)
(100*(34.4-x))/200 = 0
( 100 )
100 = 0
x belongs to the empty set
( 34.4-x )
34.4-x = 0 // - 34.4
-x = -34.4 // * -1
x = 34.4
x = 34.4
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