kikikikitty23
contestada

Margie's work for adding linear expressions is shown below. After checking her answer with the answer key, she solved it incorrectly.


Given (−2.67b + 11) − (5.38b − 15)
Step 1 −2.67b + 11 + (−5.38b) + 15
Step 2 −2.67b + 5.38b + 11 + 15
Step 3 (−2.67b + 5.38b) + (11 + 15)
Step 4 2.71b + 26


Part A: Identify and explain the first step where Margie made an error. (2 points)

Part B: Explain how to correctly write the expression in fewest terms by correcting the error in Part A. Show all work. (2 points)

Respuesta :

chibabykalu16

Step-by-step explanation:

Part A She made an error in step 4 when calculate it

Part B

−2.67b+11−(5.38b−15)

Distribute the Negative Sign:

=−2.67b+11+−1(5.38b−15)

=−2.67b+11+−1(5.38b)+(−1)(−15)

=−2.67b+11+−5.38b+15

Combine Like Terms:

=−2.67b+11+−5.38b+15

=(−2.67b+−5.38b)+(11+15)

=−8.05b+26

lm424142
I think the answer is it -8.05b+26, I’m not sure though.

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