anonymous
  • anonymous
Solve the following equation, explaining what you did in each step of your solution. After solving the equation, show the steps to check your solution. 3 x + 2(4 + 6 x ) = 113
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
I found the answer but when I plugged it in, it wasn't right.
jojokiw3
  • jojokiw3
Hm, expand 2(4+6x). What do you get?
anonymous
  • anonymous
I get 2(4) + 2(6x)

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jojokiw3
  • jojokiw3
Which then equals?
anonymous
  • anonymous
8 + 12x?
jojokiw3
  • jojokiw3
Okay now replace 2(4+6x) with that an show me the entire equation.
anonymous
  • anonymous
3x + 8 + 12x.
jojokiw3
  • jojokiw3
= 113 right? So you now have.
jojokiw3
  • jojokiw3
3x + 8 + 12x = 113. What do you do next?
anonymous
  • anonymous
15x + 8 = 113?
jojokiw3
  • jojokiw3
Okay, then what?
anonymous
  • anonymous
We have to subtract 8 on both sides.
jojokiw3
  • jojokiw3
Mhm, so what's the equation now??
anonymous
  • anonymous
15x = 105.
jojokiw3
  • jojokiw3
Mhm, so what does x =?
anonymous
  • anonymous
7. But the thing is I plugged it in to the original equation and I ended up with a random number that's bigger than 113.
jojokiw3
  • jojokiw3
Hm. Let's see. 3(7) + 2[4+6(7)] = 113. 21 + 2(4+42) = 113. 21 + 2(46) = 113. 21 + 92 = 113. 113 = 113.
jojokiw3
  • jojokiw3
Seems alright to me. C:
anonymous
  • anonymous
If you don't know what I did then this is what I did. 3(7) + 2(4) + 2(6*7) = 113 21 + 8 + 84 = 113 which is not 113.
jojokiw3
  • jojokiw3
Lol 21 + 8 +84 does equal 113.
jojokiw3
  • jojokiw3
8+84 = 92. 92 + 21 = 113.
anonymous
  • anonymous
Okay I'm confused now.
jojokiw3
  • jojokiw3
Lol 7 is the answer haha.
anonymous
  • anonymous
Ugh! Thank You anyway. But why does math have to be so CONFUSING! Sorry but this is why I don't like math.
jojokiw3
  • jojokiw3
Np.
anonymous
  • anonymous
So thank you millions of times for undoing the confusion.
anonymous
  • anonymous
Do you also do English?
jojokiw3
  • jojokiw3
Yep.
anonymous
  • anonymous
Oh. Great! Can you help me in that too? But since I'm kind of good a t math, I'll need help but not as much as math.
jojokiw3
  • jojokiw3
Just tag me in the question.

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