-3c+12=42

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Solution for -3c+12=42 equation: 



-3c+12=42

We move all terms to the left:

-3c+12-(42)=0

We add all the numbers together, and all the variables

-3c-30=0

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

-3c=30

c=30/-3

c=-10

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