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a in (-oo:+oo)
a-((5*(a-2))/8)-(3/5) = 2*a+8/4 // - 2*a+8/4
a-((5*(a-2))/8)-(2*a)-(3/5)-(8/4) = 0
(-5/8)*(a-2)+a-2*a-3/5-2 = 0
a-5/8*(a-2)-2*a-3/5-2 = 0
(-5/8*5*(a-2))/5+(5*a)/5+(-2*5*a)/5-3/5+(-2*5)/5 = 0
5*a-5/8*5*(a-2)-2*5*a-2*5-3 = 0
15/8*a-10*a-10-3+25/4 = 0
25/4-65/8*a-10-3 = 0
13/4-65/8*a-10 = 0
-65/8*a-27/4 = 0
(-65/8*a-27/4)/5 = 0
(-65/8*a-27/4)/5 = 0 // * 5
-65/8*a-27/4 = 0
-65/8*a-27/4 = 0 // + 27/4
-65/8*a = 27/4 // : -65/8
a = 27/4/(-65/8)
a = -54/65
a = -54/65
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