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a. B and C are rational numbers, and the positions on the number axis are shown in the figure below, then the result of | a | + | B | + | a + B | + | B-C | reduction is ()
-----------1---a---0-------1---b---c----▷
a. B and C are rational numbers, and the positions on the number axis are shown in the figure below, then the result of | a | + | B | + | a + B | + | B-C | reduction is ()
-----------1---a---0-------1---b---c----▷
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