c+11=20;c=9

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Solution for c+11=20;c=9 equation: 



c+11=20c=9

We move all terms to the left:

c+11-(20c)=0

We add all the numbers together, and all the variables

-19c+11=0

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

-19c=-11

c=-11/-19

c=11/19

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