# I dont get this

Simplify: -0.8b + 4.1c -(-3.2b) - 0.1c
A) -2.4b + 4c
B) 2.4b + 4c
C) 2.4c + 4b
D) 2.4b - 4c

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1. -0.8b + 3.2b

4.1c - 0.1c

Combine those terms.

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👩‍🏫
Ms. Sue
2. We can only add "like" terms, so the b's go together and the c's go together

-0.8b + 4.1c -(-3.2b) - 0.1c
= -0.8b + 4.1c + 3.2b - 0.1c
= 3.2b -.8b + 4.1c - .1c
= 2.4b + 4c

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3. 2.4b+ 4c d?

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4. Can you also check my student survey plz?

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5. Where did you get d?

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👩‍🏫
Ms. Sue
6. -0.8b + 3.2=2.4 (b) 4.1c - 0.1=4 (c)

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7. What does 10.8 (b) what does (b) mean and (c)

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👩‍🏫
Ms. Sue
9. And look at Reiny's post:
We can only add "like" terms, so the b's go together and the c's go together

-0.8b + 4.1c -(-3.2b) - 0.1c
= -0.8b + 4.1c + 3.2b - 0.1c
= 3.2b -.8b + 4.1c - .1c
= 2.4b + 4c

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10. B and C are the unknown numbers that are multiplied.

Example:

2x = 6
x = 3

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👩‍🏫
Ms. Sue
11. It's B! Right?

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12. Can you check my HELP PLZ post and my student survey plz?

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