11+7=9+c

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Solution for 11+7=9+c equation: 



11+7=9+c

We move all terms to the left:

11+7-(9+c)=0

We add all the numbers together, and all the variables

-(c+9)+11+7=0

We add all the numbers together, and all the variables

-(c+9)+18=0

We get rid of parentheses

-c-9+18=0

We add all the numbers together, and all the variables

-1c+9=0

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

-c=-9

c=-9/-1

c=+9

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