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n in (-oo:+oo)
4/5-((2/3)*n) = 202/165-3*n // - 202/165-3*n
4/5-((2/3)*n)-(-3*n)-(202/165) = 0
(-2/3)*n+3*n+4/5-202/165 = 0
7/3*n-14/33 = 0 // + 14/33
7/3*n = 14/33 // : 7/3
n = 14/33/7/3
n = 2/11
n = 2/11
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