Mathematics, 20.12.2019 01:31, emopandabogard4296

Prof. schaben asks her students to simplify this expression: 21 space plus space 15 space divided by space 3. cecilia's answer is 12. is this the correct answer? why or why not?

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Prof. schaben asks her students to simplify this expression: 21 space plus space 15 space divided b...