3c+2c=21

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Solution for 3c+2c=21 equation: 



3c+2c=21

We move all terms to the left:

3c+2c-(21)=0

We add all the numbers together, and all the variables

5c-21=0

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

5c=21

c=21/5

c=4+1/5

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