7c-4=21

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Solution for 7c-4=21 equation: 



7c-4=21

We move all terms to the left:

7c-4-(21)=0

We add all the numbers together, and all the variables

7c-25=0

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

7c=25

c=25/7

c=3+4/7

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