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a in (-oo:+oo)
a-((5*(a-4))/8)-(5/3) = 2*a+8/4 // - 2*a+8/4
a-((5*(a-4))/8)-(2*a)-(5/3)-(8/4) = 0
(-5/8)*(a-4)+a-2*a-5/3-2 = 0
a-5/8*(a-4)-2*a-5/3-2 = 0
(-5/8*3*(a-4))/3+(3*a)/3+(-2*3*a)/3-5/3+(-2*3)/3 = 0
3*a-5/8*3*(a-4)-2*3*a-2*3-5 = 0
9/8*a-6*a-6-5+15/2 = 0
15/2-39/8*a-6-5 = 0
5/2-39/8*a-6 = 0
-39/8*a-7/2 = 0
(-39/8*a-7/2)/3 = 0
(-39/8*a-7/2)/3 = 0 // * 3
-39/8*a-7/2 = 0
-39/8*a-7/2 = 0 // + 7/2
-39/8*a = 7/2 // : -39/8
a = 7/2/(-39/8)
a = -28/39
a = -28/39
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