anonymous
  • anonymous
find what c means - 27=3c-3(6-2c)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Jamierox4ev3r
  • Jamierox4ev3r
ah you want to find the value of c? first, lets simplify this equation together! That is what you are asking, isn't it...
anonymous
  • anonymous
Yes Thanks!!!! Finally I get it Okay she said we need to simplify then use inverse then prove it and then do our properties
Jamierox4ev3r
  • Jamierox4ev3r
right, you simplify by distributing, add the like terms together, then you solve for c just like in a regular equation! :)

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More answers

anonymous
  • anonymous
okay so I don't think there is anything we can simplify
anonymous
  • anonymous
Ok I guess that's correct thank you...... :)
petiteme
  • petiteme
- 27=3c-3(6-2c) First, distribute -3 to the parenthesis so -27 = 3c-18+6c add like terms -27 = 9c - 18 To get c, transpose -18 to the other side -27 + 18 = 9c -9 = 9c divide both sides by 9 so c=-1
anonymous
  • anonymous
wait that's not right but thank you I messed up and put -27 and it is just 27
Jamierox4ev3r
  • Jamierox4ev3r
thanks for explaining @petiteme , but I was hoping to get @haburke to figure it out by him/her self lol well that's okay, glad you get it now :)
anonymous
  • anonymous
No it wasn't right Jaimerox4ev3r I messed up and put - 27
petiteme
  • petiteme
Sorry :) @haburke if its not -27, just follow the steps :)
anonymous
  • anonymous
ok thanks to you both
Jamierox4ev3r
  • Jamierox4ev3r
and plug the variable back into the equation, that should help you a lot! :) This will also help prove whether you are correct or not
anonymous
  • anonymous
okay now I have another one but I got the answer and it works in the calculator but not when I try to prove it
anonymous
  • anonymous
3+4(z+5)=3 I got z= 2
petiteme
  • petiteme
distribute first 4 to the (z + 5)
petiteme
  • petiteme
substitute z by 2 :)
Jamierox4ev3r
  • Jamierox4ev3r
lets double check by plugging in the values. 3+4(2+5)=3 3+8+20 does not equal 3....so that means taht 2 is not a correct answer. Let me walk you through a process similar to the one @petiteme showed earlier
Jamierox4ev3r
  • Jamierox4ev3r
So first, use distribution 3+4(z+5)=3 3+4z+20=3 Then add like terms 23+4z=3 Subtact 23 from both sides 23+4z=3 -23 -23 --------- 4z=-20 divide by 4 4z=-20 /4 /4 z=-5 ^ and that right there should be your answer :)
anonymous
  • anonymous
ok see i did this : 3=4(z+15)=3 3+4z+20=31 4z+23=31 4z+23-23=31-23 4z=8 4z/4=8/4 z=2
Jamierox4ev3r
  • Jamierox4ev3r
how did you get 31 is my question? also, why do you have 15 in your top line inside the parentheses, i thought it was 5!. All of what you did seems correct, just not sure how you got 31.
anonymous
  • anonymous
Okay the original problem was 3+4(z+5)=40
anonymous
  • anonymous
crud no 31
anonymous
  • anonymous
the original problem is 3+4(z+5)=31
Jamierox4ev3r
  • Jamierox4ev3r
wait so you wrote the problem wrong? O.o if so, rewrite it correctly please lol and then I can try to double check and solve it again :P if need be
anonymous
  • anonymous
Okay I just cant type well today : 3+4(z+15)=31 3+4z+20=31 4Z+23=31 -23 -23 4Z= 8 4Z/4=8/4 Z=2
anonymous
  • anonymous
??
petiteme
  • petiteme
is it really 15 or 5?
anonymous
  • anonymous
its 15 i just messed up sorry
petiteme
  • petiteme
its okay :) if its 15, check your calculations. while distributing 4, 4(15) is not 20 :)

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