2c+7=21.

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Solution for 2c+7=21. equation: 



2c+7=21.

We move all terms to the left:

2c+7-(21.)=0

We add all the numbers together, and all the variables

2c+7-21=0

We add all the numbers together, and all the variables

2c-14=0

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

2c=14

c=14/2

c=7

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