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.

HiylinLink Mar 20, 2019

#1**+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.

.

Guest Mar 20, 2019

#2**+3 **

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