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FOr an integer nlt2, we have real number...

FOr an integer `nlt2`, we have real numbers `a_1,a_2,a_3,a_4,..........,a_n` such that `a_2+a_3+a_4+.......+a_n=a1 and a_1+a_3+a_4+...........+a_n=a_2...............a_1+a_2+a_3+..............+a_(n-1)=a_n` what is the value of `a_1+a_2+a_3+........+a_n?`

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