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The average of $x+6$, $6x+2$, and $2x+7$ is $4x-7$. What is $x$?

off-topic
 Mar 19, 2020
 #1
avatar+1955 
+1

This was posted here: https://web2.0calc.com/questions/helpp_29

 

Take a look at it! Hope this helped~

 Mar 19, 2020
 #2
avatar+111360 
+1

We have  that

 

( x + 6)  + (6x + 2)  + (2x + 7)

________________________  =    2x +  7        simplify

                  3

 

 

9x  + 15  =   3(2x + 7)

 

9x +  15  =  6x  + 21       subtract  15, 6x  from both sides

 

3x  = 6

 

x   = 2

 

 

cool cool cool

 Mar 19, 2020
 #3
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0

I got it wrong it was 12

 Mar 19, 2020

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