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a in (-oo:+oo)
a/8 = (a-5)/3 // - (a-5)/3
a/8-((a-5)/3) = 0
(-1*(a-5))/3+a/8 = 0
(-1*8*(a-5))/(3*8)+(3*a)/(3*8) = 0
3*a-1*8*(a-5) = 0
40-5*a = 0
(40-5*a)/(3*8) = 0
(40-5*a)/(3*8) = 0 // * 3*8
40-5*a = 0
40-5*a = 0 // - 40
-5*a = -40 // : -5
a = -40/(-5)
a = 8
a = 8
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