2c-1=21

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Solution for 2c-1=21 equation: 



2c-1=21

We move all terms to the left:

2c-1-(21)=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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