9c+7=5c+21

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Solution for 9c+7=5c+21 equation: 



9c+7=5c+21

We move all terms to the left:

9c+7-(5c+21)=0

We get rid of parentheses

9c-5c-21+7=0

We add all the numbers together, and all the variables

4c-14=0

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

4c=14

c=14/4

c=3+1/2

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