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n in (-oo:+oo)
3*n-((2/3)*n)+3/5 = 449/165 // - 449/165
3*n-((2/3)*n)+3/5-(449/165) = 0
3*n+(-2/3)*n+3/5-449/165 = 0
7/3*n-70/33 = 0 // + 70/33
7/3*n = 70/33 // : 7/3
n = 70/33/7/3
n = 10/11
n = 10/11
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