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a in (-oo:+oo)
14.4 = a/4.8 // - a/4.8
14.4-(a/4.8) = 0
14.4-0.20833333*a = 0
14.4-0.20833333*a = 0 // - 14.4
-0.20833333*a = -14.4 // : -0.20833333
a = -14.4/(-0.20833333)
a = 69.12000111
a = 69.12000111
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