anonymous
  • anonymous
4. Simplify the expression. -3(b – 7) This is what i got -3 -3b -21 +3 +3 -3 b -18 18/3 =6
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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AbdullahM
  • AbdullahM
Lets start from the beginning.
AbdullahM
  • AbdullahM
We need to use this property, which by chance I had told you in the earlier post. \(\sf\Large a(b+c)=ab+ac\)
AbdullahM
  • AbdullahM
HOWEVER, your question is \(\sf\Large -3(b-7)\)

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anonymous
  • anonymous
Yeah
AbdullahM
  • AbdullahM
so since you have a problem with negative numbers, let me make it a little easier on you :)
AbdullahM
  • AbdullahM
\(\sf\Large -a(b-c) = -ab + ac\) Remember to carefully look at the - and +'s :)
anonymous
  • anonymous
Okay. Still don't really get it.
AbdullahM
  • AbdullahM
just replace the a with 3 and the c with 7
anonymous
  • anonymous
-3(7) = -21?
anonymous
  • anonymous
-3(-7) 21
anonymous
  • anonymous
Is this right?
AbdullahM
  • AbdullahM
\(\sf\Large-3(b – 7)=\\\sf\Large (-3)(b) - (-3)(7)=? \)
AbdullahM
  • AbdullahM
and that is correct :)
anonymous
  • anonymous
So i do need to do anything else with this problem?
AbdullahM
  • AbdullahM
but 21 isn't the final answer.
AbdullahM
  • AbdullahM
so far you have gotten: \(\sf\Large (-3)(b) - (-3)(7)=-3b-(-21)\)
anonymous
  • anonymous
Why is it saying i'm typing and half the time i'm not. XD
anonymous
  • anonymous
So do i solve for b?
AbdullahM
  • AbdullahM
that's an OpenStudy glitch xD
AbdullahM
  • AbdullahM
and no, just simplify that what is - (-21) = ?
anonymous
  • anonymous
Positive 21?
AbdullahM
  • AbdullahM
correct
AbdullahM
  • AbdullahM
so your final answer would become: \(\sf\Large -3b+21\)
anonymous
  • anonymous
Alright thank you so much ^ ^
AbdullahM
  • AbdullahM
:)
anonymous
  • anonymous
Openstudy not letting me close the question
AbdullahM
  • AbdullahM
refresh, maybe?

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