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Mathematics 18 Online
OpenStudy (yacoub1993):

Rewrite the expression without absolute value bars. | 21 | A. 0 B. -21 C. 42 D. 21

hartnn (hartnn):

|a| is just +a

OpenStudy (yacoub1993):

i think it D. 21

hartnn (hartnn):

yes, correct :)

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