7b+3-4b+3-3(b+4)
How do you get your answer?

Question

7b+3-4b+3-3(b+4)
How do you get your answer?

michele_laino · Answer

please aply the ditributive property in order to simpliy the 5-th term, namely:
$$ - 3(b + 4) = ...?$$

michele_laino · Answer

oops...please apply...

anonymous · Answer

$$7b+3-4b=3-3b-12$$ Okay, Grammar is often ignored during social conversations.

michele_laino · Answer

I got this:
$$\begin{gathered}
  7b + 3 - 4b + 3 - 3\left( {b + 4} \right) =  \hfill \
   = 3b + 6 - 3b - 12 \hfill \ 
\end{gathered} $$

anonymous · Answer

I'm sorry I wrote it wrong the first time, its suppose to be $$7b+3-4b=3-3(b+4)$$

michele_laino · Answer

ok! then you are right!

anonymous · Answer

How? My teacher told us to use FOIL for 3-3(b+4) Should I?

anonymous · Answer

FOIL isn't used in this problem because if you look closely you're only multiplying -3 by whats in the parenthesis

anonymous · Answer

so it would be (-3*b) + (-3*4)

michele_laino · Answer

yes, the application of  the distributive property of multiplication over addition is the same as to use foil

anonymous · Answer

So this is what I'll get$$7b+3-4b=-9-3b = 3b+3=-9-3b$$

anonymous · Answer

then I go on to get -2 but my teacher said the answer is suppose to be -1/2

michele_laino · Answer

you should get this:
$$3b + 3 =  - 3b - 9$$
so you are right!

anonymous · Answer

Thank you, I thought I did it wrong.

michele_laino · Answer

thank you!