SOLUTION: 6x-7= 2x=29 My teach helped me to understand this. I got an answer of x=9. My teacher actually did the work for me and I have a test tomorrow. I don't want to fail! I still don't

Algebra ->  Equations -> SOLUTION: 6x-7= 2x=29 My teach helped me to understand this. I got an answer of x=9. My teacher actually did the work for me and I have a test tomorrow. I don't want to fail! I still don't       Log On


   



Question 228973: 6x-7= 2x=29 My teach helped me to understand this. I got an answer of x=9. My teacher actually did the work for me and I have a test tomorrow. I don't want to fail! I still don't understand it. Please help my by tomorrow! Thanks!~
Found 4 solutions by CassieLynn, stanbon, ankor@dixie-net.com, josmiceli:
Answer by CassieLynn(3) About Me  (Show Source):
You can put this solution on YOUR website!
6x-7=2x=29
+2x +2x
______________
8x-7=29
+7 +7
_________
8x=36
36/8
x=4.5

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
6x-7= 2x+29
My teacher helped me to understand this. I got an answer of x=9.
---------------------------------
Subtract 2x from both sides:
4x-7 = 29
------------
Add 7 to both sides to get:
4x = 36
-------------------------
Divide both sides by 4 to get:
x = 9
=============================
Cheers,
Stan H.

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
6x - 7 = 2x + 29
:
We want to perform operations on both sides of the equation to get the variable
(x) on one side by itself, usually the left side
;
Add 7 to both sides
6x - 7 + 7 = 2x + 29 + 7
so we have
6x = 2x + 36
:
Subtract 2x from both sides
6x - 2x = 2x - 2x + 36
we have
4x = 36
:
Divide both sides by 4
%284x%29%2F4 = 36%2F4
we have
x = 9
;
;
Confirm your answer by replacing x with 9 in the original problem
6x - 7 = 2x + 29
6(9) - 7 = 2(9) + 29
54 - 7 = 18 + 29
47 = 47; confirms our solution

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
6x+-+7+=+2x+%2B+29
The only thing you have to remember about equations is:
whatever you do to one side, you have to do the same thing
to the other side. Think of the "=" sign as a balence point,
and you have to keep the equation balanced.
----------------------------------
OK, now add 7 to both sides
6x+-+7+=+2x+%2B+29
6x+-7+%2B+7+=+2x+%2B+29+%2B+7
6x+=+2x+%2B+36
It's still balanced since I did the sme thing to both sides
Now subtract 2x from both sides
+6x+-+2x+=+2x+-+2x+%2B+36
4x+=+36
Now divide both sides by 4
%284x%29%2F4+=+36%2F4
x+=+9
The important thing is that I kept the quation balanced
by doing the same thing to both sides at each step.
You can always check your work, too
by plugging the x=9 back into the original equation
6x+-+7+=+2x+%2B+29
6%2A9+-+7+=+2%2A9+%2B+29
If I was right, the equation will be balanced
54+-+7+=+18+%2B+29
47+=+47
OK