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a in (-oo:+oo)
a/9.5 = 8.2 // - 8.2
a/9.5-8.2 = 0
0.10526316*a-8.2 = 0 // + 8.2
0.10526316*a = 8.2 // : 0.10526316
a = 8.2/0.10526316
a = 77.89999844
a = 77.89999844
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