20=2(c-1)

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Solution for 20=2(c-1) equation: 



20=2(c-1)

We move all terms to the left:

20-(2(c-1))=0



We calculate terms in parentheses: -(2(c-1)), so:

2(c-1)

We multiply parentheses

2c-2

Back to the equation:

-(2c-2)



We get rid of parentheses

-2c+2+20=0

We add all the numbers together, and all the variables

-2c+22=0

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

-2c=-22

c=-22/-2

c=+11

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