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)=0

We add all the numbers together, and all the variables

2c-7=0

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

2c=7

c=7/2

c=3+1/2

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