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a in (-oo:+oo)
6*(6-(2*a)) = 27*a-((3/2)*(6-4*a)) // - 27*a-((3/2)*(6-4*a))
6*(6-(2*a))+(3/2)*(6-4*a)-(27*a) = 0
6*(6-2*a)+(3/2)*(6-4*a)-27*a = 0
6*(6-2*a)+3/2*(6-4*a)-27*a = 0
6*(6-2*a)+3/2*(6-4*a)-27*a = 0
45-18*a-27*a = 0
45-45*a = 0
45-45*a = 0
45-45*a = 0 // - 45
-45*a = -45 // : -45
a = -45/(-45)
a = 1
a = 1
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