2(c-1)=18

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Solution for 2(c-1)=18 equation: 



2(c-1)=18

We move all terms to the left:

2(c-1)-(18)=0

We multiply parentheses

2c-2-18=0

We add all the numbers together, and all the variables

2c-20=0

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

2c=20

c=20/2

c=10

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