Question

已知a大于b大于c,|a|=1,|b|=2,|c|=3,则a-b+c=?求详细回答

Answer 1

因为|a| = 1 ,|b| = 2 |c| = 3,且a > b > c

所以 a = 1 ,b = -2 ,c = - 3 或 a = -1 ,b = -2 ,c = -3

当 a = 1 ,b = -2 ,c = - 3 时

a - b + c = 1 - (-2) + (-3) = 0

当 a = -1 ,b = -2 ,c = - 3 时

a - b + c = -1 - (-2) + (-3) = -2