Question

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


Given (−4.23b + 13) − (5.47b − 12)
Step 1 −4.23b + 13 + (−5.47b) + 12
Step 2 −4.23b + −5.47b + 13 + 12
Step 3 (−4.23b + −5.47b) + (13 + 12)
Step 4 9.7b + 25


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)

Answer 1

someone pls help me!!!!

Answer 2

hol up

Answer 3

@narad

Answer 4

@questioncovebot

Answer 5

@vocaloid can you help guide 3lout in this problem

Answer 6

@semilore

Answer 7

bro help my friend

Answer 8

😭 we've not done this

Answer 9

but i'll try

Answer 10

I alr know the answer if you read the question you can see that she got the right answer but its just that she messed up the explanation ir the step by step solution

Answer 11

check ur dms

Answer 12

Going from step 3 to 4

Step 3 (−4.23b + −5.47b) + (13 + 12)
Step 4 9.7b + 25

Notice the b terms. -4.23b + - 5.47b becomes -4.23b - 5.47b which is -9.7b not positive 9.7b