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a in (-oo:+oo)
(2/3)*a-5+3.45 = 4.65 // - 4.65
(2/3)*a-5-4.65+3.45 = 0
2/3*a-6.2 = 0 // + 6.2
2/3*a = 6.2 // : 2/3
a = 6.2/2/3
a = 9.29999995
a = 9.29999995
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