NessaPetrenko
  • NessaPetrenko
Solve. 3(x + 1) - 2x = -6. A) x = 1 B) x = 5 Eliminate C) x = -7 D) x = -9
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Maddy1251
  • Maddy1251
First, why don't we get rid of them parentheses. That will make it cleaner looking, right? :)
Maddy1251
  • Maddy1251
3(x + 1) - 2x = -6. 3x+3-2x=-6 Woo, looks A LOT better now. So, we want to solve for 'x'. We want 'x' by itself. Lets work on that, shall we?
Maddy1251
  • Maddy1251
3x+3-2x=-6 Lets get that +3 away. 3x+3-3-2x=-6+3 3x-2x=-3

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Maddy1251
  • Maddy1251
Now, we have like terms on each side, the 'x' isn't mixed up with any numbers that do not have the 'x' terms. Lets continue with 3x-2x=-3 So now we will subtract the 3x-2x because they are like terms.. That will yield '1x' or simply 'x' So x=-3
Maddy1251
  • Maddy1251
Hmm, but that isn't an answer..
Maddy1251
  • Maddy1251
Well.. Since that didn't work, we will plug-and-chug.
NessaPetrenko
  • NessaPetrenko
okay!
Maddy1251
  • Maddy1251
The answer is D, I guess. Just plug in what x=n, into the original equation. I shall show you
NessaPetrenko
  • NessaPetrenko
k thx.
Maddy1251
  • Maddy1251
\[3(x + 1) - 2x = -6. : 3(-9+1)-2(-9)=-6\]
Maddy1251
  • Maddy1251
Sorry for the junk before. Not sure why it didn't yield the answer before.

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