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a in (-oo:+oo)
1.4/1.2-(1.1333*2)+5.6 = a // - a
1.4/1.2-a-(1.1333*2)+5.6 = 0
1.4/1.2-a-2.2666+5.6 = 0
4.50006667-a = 0 // - 4.50006667
-a = -4.50006667 // * -1
a = 4.50006667
a = 4.50006667
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