12c-9=2c+11

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Solution for 12c-9=2c+11 equation: 



12c-9=2c+11

We move all terms to the left:

12c-9-(2c+11)=0

We get rid of parentheses

12c-2c-11-9=0

We add all the numbers together, and all the variables

10c-20=0

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

10c=20

c=20/10

c=2

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