3c+21=36

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Solution for 3c+21=36 equation: 



3c+21=36

We move all terms to the left:

3c+21-(36)=0

We add all the numbers together, and all the variables

3c-15=0

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

3c=15

c=15/3

c=5

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