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Given that abc is a non-zero rational number, and a+b+c=0, ab >0, find the value of a/[ a ]+b/[ b ]+c/[ c ]+abc/[ abc]
ABC is known to be a non-zero rational number
Ab >0, then a, b are the same
A+b+c=0: if a, b >0, then c0, then c
A, b are rational numbers, and |a+b|=a-b.
A+b|=a+b or -a-b,
A+b=a-b or -a-b=a-b,
B=0 or a=0,
Ab=0.
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