20=2(c-9)

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Solution for 20=2(c-9) equation: 



20=2(c-9)

We move all terms to the left:

20-(2(c-9))=0



We calculate terms in parentheses: -(2(c-9)), so:

2(c-9)

We multiply parentheses

2c-18

Back to the equation:

-(2c-18)



We get rid of parentheses

-2c+18+20=0

We add all the numbers together, and all the variables

-2c+38=0

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

-2c=-38

c=-38/-2

c=+19

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