Question 283015
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
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www.math-unlock.com