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Mathematics, 12.10.2021 06:20, dchirunga23
Arlene is showing her work in simplifying β7.9 + 8.2 β 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.
StepWorkReasoning
β7.9 + 8.2 β 3.4 + 2.1Original problem
1β7.9 + 8.2 + (β3.4) + 2.1Additive inverse
2β7.9 + (β3.4) + 8.2 + 2.1Associative property
3(β7.9 + (β3.4)) + (8.2 + 2.1)Commutative property
4β11.3 + 10.3Simplify
5β1Simplify
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Arlene is showing her work in simplifying β7.9 + 8.2 β 3.4 + 2.1. Identify any errors in her work or...
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