+0  
 
+2
290
3
avatar+428 

So I have the given problem a = 2 + 3a + 6? I want to make sure what i wrote is correct I had four options  

 

 

-8 

-4 

 8 

 4 

 

 

I choose negative four and here's my work I am just slightly confused because I have always had a given value on the other side of the equation never just a letter. 

 

 

a = 2 + 3a + 6? first I gathered my like terms  

 

 a = 2 + 3a + 6 then I added the numbers 

 

 = 8 + 2a then I carried over the 8 to the other side making sure to be subtracting it from nothing resulting negative 8  

 

and 2 goes into - 8 -4 times so I got -4 for A in the equation.

 Mar 20, 2019
 #1
avatar
+2

 

 

                                                              a  =  2 + 3a + 6

subtract 3a from both sides —»      a –3a  =  2 + 6

                                                           –2a  =  8

divide both sides by –2                           a  =  –4 

 

You did it right.  It's just my personal preference to have the unknown on the left hand side. 

 

.

 Mar 20, 2019
 #2
avatar+428 
-2

Thank you so much I really appricated I was just kind of curious because this is my first time doing it with a missing value completley like with out any number at aall and jut a letter.

HiylinLink  Mar 20, 2019
 #3
avatar+1015 
-5

This is really cool

Nickolas  Mar 21, 2019

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