Mathematics, 09.07.2019 02:30 Sprout7430
Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. identify any errors in her work or in her reasoning. write feedback to arlene explaining the mistake she made and how to correct her work. step work reasoning −7.9 + 8.2 − 3.4 + 2.1 original problem 1 −7.9 + 8.2 + (−3.4) + 2.1 additive inverse 2 −7.9 + (−3.4) + 8.2 + 2.1 associative property 3 (−7.9 + (−3.4)) + (8.2 + 2.1) commutative property 4 −11.3 + 10.3 simplify 5 −1 simplify
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Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. identify any errors in her work or...
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