c-9=18-2c

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Solution for c-9=18-2c equation: 



c-9=18-2c

We move all terms to the left:

c-9-(18-2c)=0

We add all the numbers together, and all the variables

c-(-2c+18)-9=0

We get rid of parentheses

c+2c-18-9=0

We add all the numbers together, and all the variables

3c-27=0

We move all terms containing c to the left, all other terms to the right

3c=27

c=27/3

c=9

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