SOLUTION: Please help me solve this equation: 1-3c=9c+7

Question 283015: Please help me solve this equation: 1-3c=9c+7
Found 3 solutions by sparks211a, unlockmath, Alan3354:
Answer by sparks211a(3)   (Show Source): You can put this solution on YOUR website!
1-3c=9c+7
-3c=9c+6
0=12c+6
-6=12c
Divide both sides by 12
c=-6/12
c = -1/2

Answer by unlockmath(1688)   (Show Source): You can put this solution on YOUR website!
Hello,
The key to solving an equation is getting the variable (in this case, "c") all by itself on one side of the equal sign.
1-3c=9c+7 Add 3c to both sides to get:
1=12c+7 Now subtract 7 from both sides to get:
-6=12c Now the last step is to divide both sides by 12 to result in:
c=-1/2
Plug this answer into the original to see if it works.
RJ
There's a book I wrote that will help you out.
www.math-unlock.com
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
1-3c=9c+7
1 = 12c + 7
-12c = 6
c = 6/-12
c = -1/2
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