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Mathematics, 08.11.2020 01:20 bobiscool3698

Angie is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning. 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 Commutative property 3 [−7.9 + (−3.4)] + (8.2 + 2.1) Associative property 4 −11.3 + 10.3 Simplify 5 −1 Simplify

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Angie 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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