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 fee

Question

3 years ago

11

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 fee

dback to Arlene explaining the mistake she made and how to correct her work.
Original problem
−7.9 + 8.2 − 3.4 + 2.1

Step Work Reasoning

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

Mathematics

2 answers:

xeze [42] · Answer 1 · 2022-07-06T10:59:24+03:00

xeze [42]3 years ago

6 0

Answer:

Step-by-step explanation:

step one is wrong

NemiM [27] · Answer 2 · 2022-07-06T09:53:46+03:00

NemiM [27]3 years ago

5 0

Step 1 it says Additive inverse, that is not additive inverse. Additive inverse is the opposite of a number. There is no opposite number in the problem. And step 5 is the answer, it shouldn't be simplify. Hope that helps! <span />