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n in (-oo:+oo)
8*n+20/3 = (4/3)*(5*n-1)+(7/3)*n // - (4/3)*(5*n-1)+(7/3)*n
8*n-((4/3)*(5*n-1))-((7/3)*n)+20/3 = 0
(-4/3)*(5*n-1)+8*n+(-7/3)*n+20/3 = 0
8*n-4/3*(5*n-1)+(-7*n)/3+20/3 = 0
(-4/3*3*(5*n-1))/3+(3*8*n)/3+(-7*n)/3+20/3 = 0
3*8*n-4/3*3*(5*n-1)-7*n+20 = 0
4*n-7*n+4+20 = 0
4-3*n+20 = 0
24-3*n = 0
(24-3*n)/3 = 0
(24-3*n)/3 = 0 // * 3
24-3*n = 0
24-3*n = 0 // - 24
-3*n = -24 // : -3
n = -24/(-3)
n = 8
n = 8
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